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Finding the Fourth Proportional to 223,155.18, 307,956.33 and 122,553.18

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Solution

The fourth proportional to 223,155.18, 307,956.33 and 122,553.18 is: 169,124.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,155.18 : 307,956.33 = 122,553.18 : x
  2. Step 2: Convert to fraction form
    223,155.18/307,956.33 = 122,553.18/x
  3. Step 3: Cross multiply
    223,155.18x = 307,956.33 × 122,553.18
  4. Step 4: Simplify right side
    223,155.18x = 37,741,027,542.63
  5. Step 5: Solve for x
    x = 37,741,027,542.63/223,155.18
  6. Step 6: Final answer
    x = 169,124.59

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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.