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Finding the Fourth Proportional to 215,233.32, 322,851.60 and 74,991.72

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Solution

The fourth proportional to 215,233.32, 322,851.60 and 74,991.72 is: 112,488.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,233.32 : 322,851.60 = 74,991.72 : x
  2. Step 2: Convert to fraction form
    215,233.32/322,851.60 = 74,991.72/x
  3. Step 3: Cross multiply
    215,233.32x = 322,851.60 × 74,991.72
  4. Step 4: Simplify right side
    215,233.32x = 24,211,196,788.75
  5. Step 5: Solve for x
    x = 24,211,196,788.75/215,233.32
  6. Step 6: Final answer
    x = 112,488.14

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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.