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Finding the Fourth Proportional to 225,601.71, 338,385.65 and 65,678.87

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Solution

The fourth proportional to 225,601.71, 338,385.65 and 65,678.87 is: 98,513.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,601.71 : 338,385.65 = 65,678.87 : x
  2. Step 2: Convert to fraction form
    225,601.71/338,385.65 = 65,678.87/x
  3. Step 3: Cross multiply
    225,601.71x = 338,385.65 × 65,678.87
  4. Step 4: Simplify right side
    225,601.71x = 22,224,787,880.08
  5. Step 5: Solve for x
    x = 22,224,787,880.08/225,601.71
  6. Step 6: Final answer
    x = 98,513.38

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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.