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Finding the Fourth Proportional to 415,510.60, 623,371.02 and 115,990.96

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Solution

The fourth proportional to 415,510.60, 623,371.02 and 115,990.96 is: 174,015.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    415,510.60 : 623,371.02 = 115,990.96 : x
  2. Step 2: Convert to fraction form
    415,510.60/623,371.02 = 115,990.96/x
  3. Step 3: Cross multiply
    415,510.60x = 623,371.02 × 115,990.96
  4. Step 4: Simplify right side
    415,510.60x = 72,305,403,045.98
  5. Step 5: Solve for x
    x = 72,305,403,045.98/415,510.60
  6. Step 6: Final answer
    x = 174,015.78

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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.