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Finding the Fourth Proportional to 452,953.20, 679,494.60 and 137,434.80

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Solution

The fourth proportional to 452,953.20, 679,494.60 and 137,434.80 is: 206,171.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    452,953.20 : 679,494.60 = 137,434.80 : x
  2. Step 2: Convert to fraction form
    452,953.20/679,494.60 = 137,434.80/x
  3. Step 3: Cross multiply
    452,953.20x = 679,494.60 × 137,434.80
  4. Step 4: Simplify right side
    452,953.20x = 93,386,204,452.08
  5. Step 5: Solve for x
    x = 93,386,204,452.08/452,953.20
  6. Step 6: Final answer
    x = 206,171.86

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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.