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Finding the Fourth Proportional to 281,545.59, 422,359.56 and 81,840.03

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Solution

The fourth proportional to 281,545.59, 422,359.56 and 81,840.03 is: 122,772.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,545.59 : 422,359.56 = 81,840.03 : x
  2. Step 2: Convert to fraction form
    281,545.59/422,359.56 = 81,840.03/x
  3. Step 3: Cross multiply
    281,545.59x = 422,359.56 × 81,840.03
  4. Step 4: Simplify right side
    281,545.59x = 34,565,919,061.19
  5. Step 5: Solve for x
    x = 34,565,919,061.19/281,545.59
  6. Step 6: Final answer
    x = 122,772.01

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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.