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Finding the Fourth Proportional to 378,999.22, 567,876.75 and 129,545.14

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Solution

The fourth proportional to 378,999.22, 567,876.75 and 129,545.14 is: 194,105.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,999.22 : 567,876.75 = 129,545.14 : x
  2. Step 2: Convert to fraction form
    378,999.22/567,876.75 = 129,545.14/x
  3. Step 3: Cross multiply
    378,999.22x = 567,876.75 × 129,545.14
  4. Step 4: Simplify right side
    378,999.22x = 73,565,673,081.50
  5. Step 5: Solve for x
    x = 73,565,673,081.50/378,999.22
  6. Step 6: Final answer
    x = 194,105.08

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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.