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Finding the Fourth Proportional to 228,154.80, 342,255.67 and 86,119.71

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Solution

The fourth proportional to 228,154.80, 342,255.67 and 86,119.71 is: 129,188.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,154.80 : 342,255.67 = 86,119.71 : x
  2. Step 2: Convert to fraction form
    228,154.80/342,255.67 = 86,119.71/x
  3. Step 3: Cross multiply
    228,154.80x = 342,255.67 × 86,119.71
  4. Step 4: Simplify right side
    228,154.80x = 29,474,958,830.96
  5. Step 5: Solve for x
    x = 29,474,958,830.96/228,154.80
  6. Step 6: Final answer
    x = 129,188.42

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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.