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Finding the Fourth Proportional to 359,639.20, 539,458.80 and 247,664.80

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Solution

The fourth proportional to 359,639.20, 539,458.80 and 247,664.80 is: 371,497.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    359,639.20 : 539,458.80 = 247,664.80 : x
  2. Step 2: Convert to fraction form
    359,639.20/539,458.80 = 247,664.80/x
  3. Step 3: Cross multiply
    359,639.20x = 539,458.80 × 247,664.80
  4. Step 4: Simplify right side
    359,639.20x = 133,604,955,810.24
  5. Step 5: Solve for x
    x = 133,604,955,810.24/359,639.20
  6. Step 6: Final answer
    x = 371,497.20

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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.