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Finding the Fourth Proportional to 228,428.40, 342,656.04 and 88,187.76

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Solution

The fourth proportional to 228,428.40, 342,656.04 and 88,187.76 is: 132,286.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,428.40 : 342,656.04 = 88,187.76 : x
  2. Step 2: Convert to fraction form
    228,428.40/342,656.04 = 88,187.76/x
  3. Step 3: Cross multiply
    228,428.40x = 342,656.04 × 88,187.76
  4. Step 4: Simplify right side
    228,428.40x = 30,218,068,618.07
  5. Step 5: Solve for x
    x = 30,218,068,618.07/228,428.40
  6. Step 6: Final answer
    x = 132,286.83

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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.