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Finding the Fourth Proportional to 209,812.80, 289,542.96 and 124,933.44

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Solution

The fourth proportional to 209,812.80, 289,542.96 and 124,933.44 is: 172,408.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,812.80 : 289,542.96 = 124,933.44 : x
  2. Step 2: Convert to fraction form
    209,812.80/289,542.96 = 124,933.44/x
  3. Step 3: Cross multiply
    209,812.80x = 289,542.96 × 124,933.44
  4. Step 4: Simplify right side
    209,812.80x = 36,173,598,020.58
  5. Step 5: Solve for x
    x = 36,173,598,020.58/209,812.80
  6. Step 6: Final answer
    x = 172,408.92

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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.