Home / 386,641.40-579,962.10-137,348.60

Finding the Fourth Proportional to 386,641.40, 579,962.10 and 137,348.60

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Solution

The fourth proportional to 386,641.40, 579,962.10 and 137,348.60 is: 206,022.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,641.40 : 579,962.10 = 137,348.60 : x
  2. Step 2: Convert to fraction form
    386,641.40/579,962.10 = 137,348.60/x
  3. Step 3: Cross multiply
    386,641.40x = 579,962.10 × 137,348.60
  4. Step 4: Simplify right side
    386,641.40x = 79,656,982,488.06
  5. Step 5: Solve for x
    x = 79,656,982,488.06/386,641.40
  6. Step 6: Final answer
    x = 206,022.90

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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.