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Finding the Fourth Proportional to 521,884.62, 720,200.88 and 317,935.53

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Solution

The fourth proportional to 521,884.62, 720,200.88 and 317,935.53 is: 438,751.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,884.62 : 720,200.88 = 317,935.53 : x
  2. Step 2: Convert to fraction form
    521,884.62/720,200.88 = 317,935.53/x
  3. Step 3: Cross multiply
    521,884.62x = 720,200.88 × 317,935.53
  4. Step 4: Simplify right side
    521,884.62x = 228,977,448,489.27
  5. Step 5: Solve for x
    x = 228,977,448,489.27/521,884.62
  6. Step 6: Final answer
    x = 438,751.10

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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.