Home / 280,961,859.51-387,715,147.11-155,506,575.57

Finding the Fourth Proportional to 280,961,859.51, 387,715,147.11 and 155,506,575.57

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Solution

The fourth proportional to 280,961,859.51, 387,715,147.11 and 155,506,575.57 is: 214,592,311.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,961,859.51 : 387,715,147.11 = 155,506,575.57 : x
  2. Step 2: Convert to fraction form
    280,961,859.51/387,715,147.11 = 155,506,575.57/x
  3. Step 3: Cross multiply
    280,961,859.51x = 387,715,147.11 × 155,506,575.57
  4. Step 4: Simplify right side
    280,961,859.51x = 60,292,254,823,694,880
  5. Step 5: Solve for x
    x = 60,292,254,823,694,880/280,961,859.51
  6. Step 6: Final answer
    x = 214,592,311.32

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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.