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Finding the Fourth Proportional to 546,720.40, 819,691.80 and 209,630.80

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Solution

The fourth proportional to 546,720.40, 819,691.80 and 209,630.80 is: 314,297.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    546,720.40 : 819,691.80 = 209,630.80 : x
  2. Step 2: Convert to fraction form
    546,720.40/819,691.80 = 209,630.80/x
  3. Step 3: Cross multiply
    546,720.40x = 819,691.80 × 209,630.80
  4. Step 4: Simplify right side
    546,720.40x = 171,832,647,787.44
  5. Step 5: Solve for x
    x = 171,832,647,787.44/546,720.40
  6. Step 6: Final answer
    x = 314,297.12

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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.