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Finding the Fourth Proportional to 642,604.38, 963,833.13 and 169,326.78

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Solution

The fourth proportional to 642,604.38, 963,833.13 and 169,326.78 is: 253,970.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,604.38 : 963,833.13 = 169,326.78 : x
  2. Step 2: Convert to fraction form
    642,604.38/963,833.13 = 169,326.78/x
  3. Step 3: Cross multiply
    642,604.38x = 963,833.13 × 169,326.78
  4. Step 4: Simplify right side
    642,604.38x = 163,202,760,360.22
  5. Step 5: Solve for x
    x = 163,202,760,360.22/642,604.38
  6. Step 6: Final answer
    x = 253,970.82

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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.