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Finding the Fourth Proportional to 215,410.68, 297,294.48 and 123,565.68

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Solution

The fourth proportional to 215,410.68, 297,294.48 and 123,565.68 is: 170,536.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,410.68 : 297,294.48 = 123,565.68 : x
  2. Step 2: Convert to fraction form
    215,410.68/297,294.48 = 123,565.68/x
  3. Step 3: Cross multiply
    215,410.68x = 297,294.48 × 123,565.68
  4. Step 4: Simplify right side
    215,410.68x = 36,735,394,581.45
  5. Step 5: Solve for x
    x = 36,735,394,581.45/215,410.68
  6. Step 6: Final answer
    x = 170,536.55

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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.