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Finding the Fourth Proportional to 355,614.38, 532,859.78 and 288,727.71

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Solution

The fourth proportional to 355,614.38, 532,859.78 and 288,727.71 is: 432,635.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,614.38 : 532,859.78 = 288,727.71 : x
  2. Step 2: Convert to fraction form
    355,614.38/532,859.78 = 288,727.71/x
  3. Step 3: Cross multiply
    355,614.38x = 532,859.78 × 288,727.71
  4. Step 4: Simplify right side
    355,614.38x = 153,851,386,032.03
  5. Step 5: Solve for x
    x = 153,851,386,032.03/355,614.38
  6. Step 6: Final answer
    x = 432,635.45

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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.