Home / 255,011,389,868.21-351,915,851,612.78-139,269,734,002.12

Finding the Fourth Proportional to 255,011,389,868.21, 351,915,851,612.78 and 139,269,734,002.12

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Solution

The fourth proportional to 255,011,389,868.21, 351,915,851,612.78 and 139,269,734,002.12 is: 192,192,305,883.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,011,389,868.21 : 351,915,851,612.78 = 139,269,734,002.12 : x
  2. Step 2: Convert to fraction form
    255,011,389,868.21/351,915,851,612.78 = 139,269,734,002.12/x
  3. Step 3: Cross multiply
    255,011,389,868.21x = 351,915,851,612.78 × 139,269,734,002.12
  4. Step 4: Simplify right side
    255,011,389,868.21x = 49,011,227,045,241,408,192,512
  5. Step 5: Solve for x
    x = 49,011,227,045,241,408,192,512/255,011,389,868.21
  6. Step 6: Final answer
    x = 192,192,305,883.16

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.