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Finding the Fourth Proportional to 228,909.70, 343,364.55 and 71,154.10

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Solution

The fourth proportional to 228,909.70, 343,364.55 and 71,154.10 is: 106,731.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,909.70 : 343,364.55 = 71,154.10 : x
  2. Step 2: Convert to fraction form
    228,909.70/343,364.55 = 71,154.10/x
  3. Step 3: Cross multiply
    228,909.70x = 343,364.55 × 71,154.10
  4. Step 4: Simplify right side
    228,909.70x = 24,431,795,527.16
  5. Step 5: Solve for x
    x = 24,431,795,527.16/228,909.70
  6. Step 6: Final answer
    x = 106,731.15

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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.