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Finding the Fourth Proportional to 359,860.89, 539,867.46 and 135,223.28

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Solution

The fourth proportional to 359,860.89, 539,867.46 and 135,223.28 is: 202,863.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    359,860.89 : 539,867.46 = 135,223.28 : x
  2. Step 2: Convert to fraction form
    359,860.89/539,867.46 = 135,223.28/x
  3. Step 3: Cross multiply
    359,860.89x = 539,867.46 × 135,223.28
  4. Step 4: Simplify right side
    359,860.89x = 73,002,646,007.13
  5. Step 5: Solve for x
    x = 73,002,646,007.13/359,860.89
  6. Step 6: Final answer
    x = 202,863.52

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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.