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Finding the Fourth Proportional to 297,001.44, 445,494.60 and 86,641.20

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Solution

The fourth proportional to 297,001.44, 445,494.60 and 86,641.20 is: 129,959.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    297,001.44 : 445,494.60 = 86,641.20 : x
  2. Step 2: Convert to fraction form
    297,001.44/445,494.60 = 86,641.20/x
  3. Step 3: Cross multiply
    297,001.44x = 445,494.60 × 86,641.20
  4. Step 4: Simplify right side
    297,001.44x = 38,598,186,737.52
  5. Step 5: Solve for x
    x = 38,598,186,737.52/297,001.44
  6. Step 6: Final answer
    x = 129,959.59

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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.