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Finding the Fourth Proportional to 372,574.25, 514,123.15 and 211,429.30

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Solution

The fourth proportional to 372,574.25, 514,123.15 and 211,429.30 is: 291,755.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    372,574.25 : 514,123.15 = 211,429.30 : x
  2. Step 2: Convert to fraction form
    372,574.25/514,123.15 = 211,429.30/x
  3. Step 3: Cross multiply
    372,574.25x = 514,123.15 × 211,429.30
  4. Step 4: Simplify right side
    372,574.25x = 108,700,695,818.85
  5. Step 5: Solve for x
    x = 108,700,695,818.85/372,574.25
  6. Step 6: Final answer
    x = 291,755.79

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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.