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Finding the Fourth Proportional to 487,224.40, 731,614.20 and 355,032.40

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Solution

The fourth proportional to 487,224.40, 731,614.20 and 355,032.40 is: 533,115.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,224.40 : 731,614.20 = 355,032.40 : x
  2. Step 2: Convert to fraction form
    487,224.40/731,614.20 = 355,032.40/x
  3. Step 3: Cross multiply
    487,224.40x = 731,614.20 × 355,032.40
  4. Step 4: Simplify right side
    487,224.40x = 259,746,745,300.08
  5. Step 5: Solve for x
    x = 259,746,745,300.08/487,224.40
  6. Step 6: Final answer
    x = 533,115.22

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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.