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Finding the Fourth Proportional to 279,351.32, 385,513.56 and 158,497.70

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Solution

The fourth proportional to 279,351.32, 385,513.56 and 158,497.70 is: 218,731.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,351.32 : 385,513.56 = 158,497.70 : x
  2. Step 2: Convert to fraction form
    279,351.32/385,513.56 = 158,497.70/x
  3. Step 3: Cross multiply
    279,351.32x = 385,513.56 × 158,497.70
  4. Step 4: Simplify right side
    279,351.32x = 61,103,010,651.24
  5. Step 5: Solve for x
    x = 61,103,010,651.24/279,351.32
  6. Step 6: Final answer
    x = 218,731.78

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1.5x scale

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.