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Finding the Fourth Proportional to 280,876.40, 387,614.04 and 167,709.04

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Solution

The fourth proportional to 280,876.40, 387,614.04 and 167,709.04 is: 231,441.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,876.40 : 387,614.04 = 167,709.04 : x
  2. Step 2: Convert to fraction form
    280,876.40/387,614.04 = 167,709.04/x
  3. Step 3: Cross multiply
    280,876.40x = 387,614.04 × 167,709.04
  4. Step 4: Simplify right side
    280,876.40x = 65,006,378,538.92
  5. Step 5: Solve for x
    x = 65,006,378,538.92/280,876.40
  6. Step 6: Final answer
    x = 231,441.23

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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.