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Finding the Fourth Proportional to 453,314.70, 679,972.05 and 137,730.60

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Solution

The fourth proportional to 453,314.70, 679,972.05 and 137,730.60 is: 206,595.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    453,314.70 : 679,972.05 = 137,730.60 : x
  2. Step 2: Convert to fraction form
    453,314.70/679,972.05 = 137,730.60/x
  3. Step 3: Cross multiply
    453,314.70x = 679,972.05 × 137,730.60
  4. Step 4: Simplify right side
    453,314.70x = 93,652,958,429.73
  5. Step 5: Solve for x
    x = 93,652,958,429.73/453,314.70
  6. Step 6: Final answer
    x = 206,595.90

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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.