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Finding the Fourth Proportional to 453,015.48, 679,527.31 and 137,472.38

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Solution

The fourth proportional to 453,015.48, 679,527.31 and 137,472.38 is: 206,209.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    453,015.48 : 679,527.31 = 137,472.38 : x
  2. Step 2: Convert to fraction form
    453,015.48/679,527.31 = 137,472.38/x
  3. Step 3: Cross multiply
    453,015.48x = 679,527.31 × 137,472.38
  4. Step 4: Simplify right side
    453,015.48x = 93,416,236,580.70
  5. Step 5: Solve for x
    x = 93,416,236,580.70/453,015.48
  6. Step 6: Final answer
    x = 206,209.81

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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.