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Finding the Fourth Proportional to 372,758.18, 514,375.92 and 209,405.79

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Solution

The fourth proportional to 372,758.18, 514,375.92 and 209,405.79 is: 288,962.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    372,758.18 : 514,375.92 = 209,405.79 : x
  2. Step 2: Convert to fraction form
    372,758.18/514,375.92 = 209,405.79/x
  3. Step 3: Cross multiply
    372,758.18x = 514,375.92 × 209,405.79
  4. Step 4: Simplify right side
    372,758.18x = 107,713,295,884.58
  5. Step 5: Solve for x
    x = 107,713,295,884.58/372,758.18
  6. Step 6: Final answer
    x = 288,962.93

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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.