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Finding the Fourth Proportional to 372,560.32, 514,118.94 and 211,405.78

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Solution

The fourth proportional to 372,560.32, 514,118.94 and 211,405.78 is: 291,731.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    372,560.32 : 514,118.94 = 211,405.78 : x
  2. Step 2: Convert to fraction form
    372,560.32/514,118.94 = 211,405.78/x
  3. Step 3: Cross multiply
    372,560.32x = 514,118.94 × 211,405.78
  4. Step 4: Simplify right side
    372,560.32x = 108,687,715,523.47
  5. Step 5: Solve for x
    x = 108,687,715,523.47/372,560.32
  6. Step 6: Final answer
    x = 291,731.86

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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.