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Finding the Fourth Proportional to 287,251.56, 430,677.48 and 127,240.62

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Solution

The fourth proportional to 287,251.56, 430,677.48 and 127,240.62 is: 190,772.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,251.56 : 430,677.48 = 127,240.62 : x
  2. Step 2: Convert to fraction form
    287,251.56/430,677.48 = 127,240.62/x
  3. Step 3: Cross multiply
    287,251.56x = 430,677.48 × 127,240.62
  4. Step 4: Simplify right side
    287,251.56x = 54,799,669,575.24
  5. Step 5: Solve for x
    x = 54,799,669,575.24/287,251.56
  6. Step 6: Final answer
    x = 190,772.40

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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.