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Finding the Fourth Proportional to 491,490.90, 736,653.15 and 254,711.70

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Solution

The fourth proportional to 491,490.90, 736,653.15 and 254,711.70 is: 381,765.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    491,490.90 : 736,653.15 = 254,711.70 : x
  2. Step 2: Convert to fraction form
    491,490.90/736,653.15 = 254,711.70/x
  3. Step 3: Cross multiply
    491,490.90x = 736,653.15 × 254,711.70
  4. Step 4: Simplify right side
    491,490.90x = 187,634,176,146.86
  5. Step 5: Solve for x
    x = 187,634,176,146.86/491,490.90
  6. Step 6: Final answer
    x = 381,765.31

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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.