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Finding the Fourth Proportional to 453,241.60, 679,959.60 and 137,730.40

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Solution

The fourth proportional to 453,241.60, 679,959.60 and 137,730.40 is: 206,625.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    453,241.60 : 679,959.60 = 137,730.40 : x
  2. Step 2: Convert to fraction form
    453,241.60/679,959.60 = 137,730.40/x
  3. Step 3: Cross multiply
    453,241.60x = 679,959.60 × 137,730.40
  4. Step 4: Simplify right side
    453,241.60x = 93,651,107,691.84
  5. Step 5: Solve for x
    x = 93,651,107,691.84/453,241.60
  6. Step 6: Final answer
    x = 206,625.14

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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.