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Finding the Fourth Proportional to 208,872.60, 288,242.32 and 113,379.24

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Solution

The fourth proportional to 208,872.60, 288,242.32 and 113,379.24 is: 156,462.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,872.60 : 288,242.32 = 113,379.24 : x
  2. Step 2: Convert to fraction form
    208,872.60/288,242.32 = 113,379.24/x
  3. Step 3: Cross multiply
    208,872.60x = 288,242.32 × 113,379.24
  4. Step 4: Simplify right side
    208,872.60x = 32,680,695,177.44
  5. Step 5: Solve for x
    x = 32,680,695,177.44/208,872.60
  6. Step 6: Final answer
    x = 156,462.34

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.