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Finding the Fourth Proportional to 225,308.78, 337,841.95 and 90,305.10

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Solution

The fourth proportional to 225,308.78, 337,841.95 and 90,305.10 is: 135,409.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,308.78 : 337,841.95 = 90,305.10 : x
  2. Step 2: Convert to fraction form
    225,308.78/337,841.95 = 90,305.10/x
  3. Step 3: Cross multiply
    225,308.78x = 337,841.95 × 90,305.10
  4. Step 4: Simplify right side
    225,308.78x = 30,508,851,718.70
  5. Step 5: Solve for x
    x = 30,508,851,718.70/225,308.78
  6. Step 6: Final answer
    x = 135,409.07

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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.