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Finding the Fourth Proportional to 376,471.98, 564,792.21 and 127,147.50

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Solution

The fourth proportional to 376,471.98, 564,792.21 and 127,147.50 is: 190,749.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    376,471.98 : 564,792.21 = 127,147.50 : x
  2. Step 2: Convert to fraction form
    376,471.98/564,792.21 = 127,147.50/x
  3. Step 3: Cross multiply
    376,471.98x = 564,792.21 × 127,147.50
  4. Step 4: Simplify right side
    376,471.98x = 71,811,917,520.98
  5. Step 5: Solve for x
    x = 71,811,917,520.98/376,471.98
  6. Step 6: Final answer
    x = 190,749.70

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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.