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Finding the Fourth Proportional to 453,080.40, 679,447.80 and 137,432.40

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Solution

The fourth proportional to 453,080.40, 679,447.80 and 137,432.40 is: 206,096.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    453,080.40 : 679,447.80 = 137,432.40 : x
  2. Step 2: Convert to fraction form
    453,080.40/679,447.80 = 137,432.40/x
  3. Step 3: Cross multiply
    453,080.40x = 679,447.80 × 137,432.40
  4. Step 4: Simplify right side
    453,080.40x = 93,378,141,828.72
  5. Step 5: Solve for x
    x = 93,378,141,828.72/453,080.40
  6. Step 6: Final answer
    x = 206,096.18

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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.