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Finding the Fourth Proportional to 453,025.80, 679,538.70 and 137,498.40

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Solution

The fourth proportional to 453,025.80, 679,538.70 and 137,498.40 is: 206,247.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    453,025.80 : 679,538.70 = 137,498.40 : x
  2. Step 2: Convert to fraction form
    453,025.80/679,538.70 = 137,498.40/x
  3. Step 3: Cross multiply
    453,025.80x = 679,538.70 × 137,498.40
  4. Step 4: Simplify right side
    453,025.80x = 93,435,483,988.08
  5. Step 5: Solve for x
    x = 93,435,483,988.08/453,025.80
  6. Step 6: Final answer
    x = 206,247.60

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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.