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Finding the Fourth Proportional to 453,145.24, 679,673.71 and 137,604.88

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Solution

The fourth proportional to 453,145.24, 679,673.71 and 137,604.88 is: 206,393.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    453,145.24 : 679,673.71 = 137,604.88 : x
  2. Step 2: Convert to fraction form
    453,145.24/679,673.71 = 137,604.88/x
  3. Step 3: Cross multiply
    453,145.24x = 679,673.71 × 137,604.88
  4. Step 4: Simplify right side
    453,145.24x = 93,526,419,303.70
  5. Step 5: Solve for x
    x = 93,526,419,303.70/453,145.24
  6. Step 6: Final answer
    x = 206,393.91

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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.