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Finding the Fourth Proportional to 257,346.72, 386,071.62 and 88,873.20

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Solution

The fourth proportional to 257,346.72, 386,071.62 and 88,873.20 is: 133,327.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,346.72 : 386,071.62 = 88,873.20 : x
  2. Step 2: Convert to fraction form
    257,346.72/386,071.62 = 88,873.20/x
  3. Step 3: Cross multiply
    257,346.72x = 386,071.62 × 88,873.20
  4. Step 4: Simplify right side
    257,346.72x = 34,311,419,965.31
  5. Step 5: Solve for x
    x = 34,311,419,965.31/257,346.72
  6. Step 6: Final answer
    x = 133,327.60

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.