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Finding the Fourth Proportional to 359,309.28, 495,721.60 and 230,318.88

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Solution

The fourth proportional to 359,309.28, 495,721.60 and 230,318.88 is: 317,759.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    359,309.28 : 495,721.60 = 230,318.88 : x
  2. Step 2: Convert to fraction form
    359,309.28/495,721.60 = 230,318.88/x
  3. Step 3: Cross multiply
    359,309.28x = 495,721.60 × 230,318.88
  4. Step 4: Simplify right side
    359,309.28x = 114,174,042,552.21
  5. Step 5: Solve for x
    x = 114,174,042,552.21/359,309.28
  6. Step 6: Final answer
    x = 317,759.80

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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.