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Finding the Fourth Proportional to 225,500.79, 338,266.98 and 90,564.87

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Solution

The fourth proportional to 225,500.79, 338,266.98 and 90,564.87 is: 135,853.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,500.79 : 338,266.98 = 90,564.87 : x
  2. Step 2: Convert to fraction form
    225,500.79/338,266.98 = 90,564.87/x
  3. Step 3: Cross multiply
    225,500.79x = 338,266.98 × 90,564.87
  4. Step 4: Simplify right side
    225,500.79x = 30,635,105,068.99
  5. Step 5: Solve for x
    x = 30,635,105,068.99/225,500.79
  6. Step 6: Final answer
    x = 135,853.65

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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.