Home / 314,928,021.20-472,392,031.80-84,920,356.40

Finding the Fourth Proportional to 314,928,021.20, 472,392,031.80 and 84,920,356.40

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Solution

The fourth proportional to 314,928,021.20, 472,392,031.80 and 84,920,356.40 is: 127,380,534.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    314,928,021.20 : 472,392,031.80 = 84,920,356.40 : x
  2. Step 2: Convert to fraction form
    314,928,021.20/472,392,031.80 = 84,920,356.40/x
  3. Step 3: Cross multiply
    314,928,021.20x = 472,392,031.80 × 84,920,356.40
  4. Step 4: Simplify right side
    314,928,021.20x = 40,115,699,700,976,136
  5. Step 5: Solve for x
    x = 40,115,699,700,976,136/314,928,021.20
  6. Step 6: Final answer
    x = 127,380,534.60

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.