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Finding the Fourth Proportional to 359,889.54, 539,778.95 and 120,007.61

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Solution

The fourth proportional to 359,889.54, 539,778.95 and 120,007.61 is: 179,992.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    359,889.54 : 539,778.95 = 120,007.61 : x
  2. Step 2: Convert to fraction form
    359,889.54/539,778.95 = 120,007.61/x
  3. Step 3: Cross multiply
    359,889.54x = 539,778.95 × 120,007.61
  4. Step 4: Simplify right side
    359,889.54x = 64,777,581,117.77
  5. Step 5: Solve for x
    x = 64,777,581,117.77/359,889.54
  6. Step 6: Final answer
    x = 179,992.96

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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.