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Finding the Fourth Proportional to 453,144.40, 679,543.80 and 137,496.40

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Solution

The fourth proportional to 453,144.40, 679,543.80 and 137,496.40 is: 206,192.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    453,144.40 : 679,543.80 = 137,496.40 : x
  2. Step 2: Convert to fraction form
    453,144.40/679,543.80 = 137,496.40/x
  3. Step 3: Cross multiply
    453,144.40x = 679,543.80 × 137,496.40
  4. Step 4: Simplify right side
    453,144.40x = 93,434,826,142.32
  5. Step 5: Solve for x
    x = 93,434,826,142.32/453,144.40
  6. Step 6: Final answer
    x = 206,192.17

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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.