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Finding the Fourth Proportional to 453,249, 679,887.90 and 137,708.64

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Solution

The fourth proportional to 453,249, 679,887.90 and 137,708.64 is: 206,567.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    453,249 : 679,887.90 = 137,708.64 : x
  2. Step 2: Convert to fraction form
    453,249/679,887.90 = 137,708.64/x
  3. Step 3: Cross multiply
    453,249x = 679,887.90 × 137,708.64
  4. Step 4: Simplify right side
    453,249x = 93,626,438,061.46
  5. Step 5: Solve for x
    x = 93,626,438,061.46/453,249
  6. Step 6: Final answer
    x = 206,567.34

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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.