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Finding the Fourth Proportional to 191,489.63, 287,234.44 and 51,244.61

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Solution

The fourth proportional to 191,489.63, 287,234.44 and 51,244.61 is: 76,866.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,489.63 : 287,234.44 = 51,244.61 : x
  2. Step 2: Convert to fraction form
    191,489.63/287,234.44 = 51,244.61/x
  3. Step 3: Cross multiply
    191,489.63x = 287,234.44 × 51,244.61
  4. Step 4: Simplify right side
    191,489.63x = 14,719,215,292.08
  5. Step 5: Solve for x
    x = 14,719,215,292.08/191,489.63
  6. Step 6: Final answer
    x = 76,866.91

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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.