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Finding the Fourth Proportional to 279,479.76, 385,616.48 and 158,593.76

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Solution

The fourth proportional to 279,479.76, 385,616.48 and 158,593.76 is: 218,822.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,479.76 : 385,616.48 = 158,593.76 : x
  2. Step 2: Convert to fraction form
    279,479.76/385,616.48 = 158,593.76/x
  3. Step 3: Cross multiply
    279,479.76x = 385,616.48 × 158,593.76
  4. Step 4: Simplify right side
    279,479.76x = 61,156,367,481.16
  5. Step 5: Solve for x
    x = 61,156,367,481.16/279,479.76
  6. Step 6: Final answer
    x = 218,822.17

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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.