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Finding the Fourth Proportional to 209,165.59, 288,648.39 and 113,672.29

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Solution

The fourth proportional to 209,165.59, 288,648.39 and 113,672.29 is: 156,867.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,165.59 : 288,648.39 = 113,672.29 : x
  2. Step 2: Convert to fraction form
    209,165.59/288,648.39 = 113,672.29/x
  3. Step 3: Cross multiply
    209,165.59x = 288,648.39 × 113,672.29
  4. Step 4: Simplify right side
    209,165.59x = 32,811,323,496.11
  5. Step 5: Solve for x
    x = 32,811,323,496.11/209,165.59
  6. Step 6: Final answer
    x = 156,867.69

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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.