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Finding the Fourth Proportional to 279,447.68, 385,578 and 166,248.32

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Solution

The fourth proportional to 279,447.68, 385,578 and 166,248.32 is: 229,387.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,447.68 : 385,578 = 166,248.32 : x
  2. Step 2: Convert to fraction form
    279,447.68/385,578 = 166,248.32/x
  3. Step 3: Cross multiply
    279,447.68x = 385,578 × 166,248.32
  4. Step 4: Simplify right side
    279,447.68x = 64,101,694,728.96
  5. Step 5: Solve for x
    x = 64,101,694,728.96/279,447.68
  6. Step 6: Final answer
    x = 229,387.11

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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.