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Finding the Fourth Proportional to 453,288.60, 679,903.74 and 137,748.24

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Solution

The fourth proportional to 453,288.60, 679,903.74 and 137,748.24 is: 206,613.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    453,288.60 : 679,903.74 = 137,748.24 : x
  2. Step 2: Convert to fraction form
    453,288.60/679,903.74 = 137,748.24/x
  3. Step 3: Cross multiply
    453,288.60x = 679,903.74 × 137,748.24
  4. Step 4: Simplify right side
    453,288.60x = 93,655,543,554.42
  5. Step 5: Solve for x
    x = 93,655,543,554.42/453,288.60
  6. Step 6: Final answer
    x = 206,613.50

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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.