Home / 209,402.28-288,972.18-113,909.64

Finding the Fourth Proportional to 209,402.28, 288,972.18 and 113,909.64

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Solution

The fourth proportional to 209,402.28, 288,972.18 and 113,909.64 is: 157,193.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,402.28 : 288,972.18 = 113,909.64 : x
  2. Step 2: Convert to fraction form
    209,402.28/288,972.18 = 113,909.64/x
  3. Step 3: Cross multiply
    209,402.28x = 288,972.18 × 113,909.64
  4. Step 4: Simplify right side
    209,402.28x = 32,916,716,993.82
  5. Step 5: Solve for x
    x = 32,916,716,993.82/209,402.28
  6. Step 6: Final answer
    x = 157,193.69

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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.