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Finding the Fourth Proportional to 372,779.28, 514,402.80 and 211,641.12

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Solution

The fourth proportional to 372,779.28, 514,402.80 and 211,641.12 is: 292,046.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    372,779.28 : 514,402.80 = 211,641.12 : x
  2. Step 2: Convert to fraction form
    372,779.28/514,402.80 = 211,641.12/x
  3. Step 3: Cross multiply
    372,779.28x = 514,402.80 × 211,641.12
  4. Step 4: Simplify right side
    372,779.28x = 108,868,784,723.14
  5. Step 5: Solve for x
    x = 108,868,784,723.14/372,779.28
  6. Step 6: Final answer
    x = 292,046.23

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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.