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Finding the Fourth Proportional to 279,426.91, 419,140.50 and 92,438.41

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Solution

The fourth proportional to 279,426.91, 419,140.50 and 92,438.41 is: 138,657.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,426.91 : 419,140.50 = 92,438.41 : x
  2. Step 2: Convert to fraction form
    279,426.91/419,140.50 = 92,438.41/x
  3. Step 3: Cross multiply
    279,426.91x = 419,140.50 × 92,438.41
  4. Step 4: Simplify right side
    279,426.91x = 38,744,678,828.71
  5. Step 5: Solve for x
    x = 38,744,678,828.71/279,426.91
  6. Step 6: Final answer
    x = 138,657.65

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.