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Finding the Fourth Proportional to 359,686.89, 539,517.51 and 89,816.54

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Solution

The fourth proportional to 359,686.89, 539,517.51 and 89,816.54 is: 134,721.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    359,686.89 : 539,517.51 = 89,816.54 : x
  2. Step 2: Convert to fraction form
    359,686.89/539,517.51 = 89,816.54/x
  3. Step 3: Cross multiply
    359,686.89x = 539,517.51 × 89,816.54
  4. Step 4: Simplify right side
    359,686.89x = 48,457,593,320.03
  5. Step 5: Solve for x
    x = 48,457,593,320.03/359,686.89
  6. Step 6: Final answer
    x = 134,721.60

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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.