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Finding the Fourth Proportional to 491,870.88, 737,825.76 and 136,915.92

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Solution

The fourth proportional to 491,870.88, 737,825.76 and 136,915.92 is: 205,379.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    491,870.88 : 737,825.76 = 136,915.92 : x
  2. Step 2: Convert to fraction form
    491,870.88/737,825.76 = 136,915.92/x
  3. Step 3: Cross multiply
    491,870.88x = 737,825.76 × 136,915.92
  4. Step 4: Simplify right side
    491,870.88x = 101,020,092,730.10
  5. Step 5: Solve for x
    x = 101,020,092,730.10/491,870.88
  6. Step 6: Final answer
    x = 205,379.29

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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.