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Finding the Fourth Proportional to 228,306.56, 342,407.88 and 86,166.90

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Solution

The fourth proportional to 228,306.56, 342,407.88 and 86,166.90 is: 129,230.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,306.56 : 342,407.88 = 86,166.90 : x
  2. Step 2: Convert to fraction form
    228,306.56/342,407.88 = 86,166.90/x
  3. Step 3: Cross multiply
    228,306.56x = 342,407.88 × 86,166.90
  4. Step 4: Simplify right side
    228,306.56x = 29,504,225,555.17
  5. Step 5: Solve for x
    x = 29,504,225,555.17/228,306.56
  6. Step 6: Final answer
    x = 129,230.74

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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.