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Finding the Fourth Proportional to 359,781.12, 539,664.13 and 119,912.38

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Solution

The fourth proportional to 359,781.12, 539,664.13 and 119,912.38 is: 179,866.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    359,781.12 : 539,664.13 = 119,912.38 : x
  2. Step 2: Convert to fraction form
    359,781.12/539,664.13 = 119,912.38/x
  3. Step 3: Cross multiply
    359,781.12x = 539,664.13 × 119,912.38
  4. Step 4: Simplify right side
    359,781.12x = 64,712,410,228.93
  5. Step 5: Solve for x
    x = 64,712,410,228.93/359,781.12
  6. Step 6: Final answer
    x = 179,866.05

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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.