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Finding the Fourth Proportional to 461,171.60, 636,320.04 and 279,978.92

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Solution

The fourth proportional to 461,171.60, 636,320.04 and 279,978.92 is: 386,312.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    461,171.60 : 636,320.04 = 279,978.92 : x
  2. Step 2: Convert to fraction form
    461,171.60/636,320.04 = 279,978.92/x
  3. Step 3: Cross multiply
    461,171.60x = 636,320.04 × 279,978.92
  4. Step 4: Simplify right side
    461,171.60x = 178,156,197,573.56
  5. Step 5: Solve for x
    x = 178,156,197,573.56/461,171.60
  6. Step 6: Final answer
    x = 386,312.16

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.