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Finding the Fourth Proportional to 223,144.20, 307,938.65 and 122,542.20

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Solution

The fourth proportional to 223,144.20, 307,938.65 and 122,542.20 is: 169,108.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,144.20 : 307,938.65 = 122,542.20 : x
  2. Step 2: Convert to fraction form
    223,144.20/307,938.65 = 122,542.20/x
  3. Step 3: Cross multiply
    223,144.20x = 307,938.65 × 122,542.20
  4. Step 4: Simplify right side
    223,144.20x = 37,735,479,023.32
  5. Step 5: Solve for x
    x = 37,735,479,023.32/223,144.20
  6. Step 6: Final answer
    x = 169,108.04

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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.