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Finding the Fourth Proportional to 372,908.71, 514,575.42 and 209,539.27

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Solution

The fourth proportional to 372,908.71, 514,575.42 and 209,539.27 is: 289,142.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    372,908.71 : 514,575.42 = 209,539.27 : x
  2. Step 2: Convert to fraction form
    372,908.71/514,575.42 = 209,539.27/x
  3. Step 3: Cross multiply
    372,908.71x = 514,575.42 × 209,539.27
  4. Step 4: Simplify right side
    372,908.71x = 107,823,757,866.74
  5. Step 5: Solve for x
    x = 107,823,757,866.74/372,908.71
  6. Step 6: Final answer
    x = 289,142.50

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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.