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Finding the Fourth Proportional to 315,067.79, 434,776.28 and 179,082.87

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Solution

The fourth proportional to 315,067.79, 434,776.28 and 179,082.87 is: 247,124.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,067.79 : 434,776.28 = 179,082.87 : x
  2. Step 2: Convert to fraction form
    315,067.79/434,776.28 = 179,082.87/x
  3. Step 3: Cross multiply
    315,067.79x = 434,776.28 × 179,082.87
  4. Step 4: Simplify right side
    315,067.79x = 77,860,983,134.91
  5. Step 5: Solve for x
    x = 77,860,983,134.91/315,067.79
  6. Step 6: Final answer
    x = 247,124.55

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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.