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Finding the Fourth Proportional to 278,588.91, 417,862.92 and 88,998.36

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Solution

The fourth proportional to 278,588.91, 417,862.92 and 88,998.36 is: 133,491.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,588.91 : 417,862.92 = 88,998.36 : x
  2. Step 2: Convert to fraction form
    278,588.91/417,862.92 = 88,998.36/x
  3. Step 3: Cross multiply
    278,588.91x = 417,862.92 × 88,998.36
  4. Step 4: Simplify right side
    278,588.91x = 37,189,114,584.81
  5. Step 5: Solve for x
    x = 37,189,114,584.81/278,588.91
  6. Step 6: Final answer
    x = 133,491.01

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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.