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Finding the Fourth Proportional to 491,950.18, 737,912.31 and 136,988.74

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Solution

The fourth proportional to 491,950.18, 737,912.31 and 136,988.74 is: 205,479.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    491,950.18 : 737,912.31 = 136,988.74 : x
  2. Step 2: Convert to fraction form
    491,950.18/737,912.31 = 136,988.74/x
  3. Step 3: Cross multiply
    491,950.18x = 737,912.31 × 136,988.74
  4. Step 4: Simplify right side
    491,950.18x = 101,085,677,577.39
  5. Step 5: Solve for x
    x = 101,085,677,577.39/491,950.18
  6. Step 6: Final answer
    x = 205,479.50

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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.