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Finding the Fourth Proportional to 342,711.60, 472,956.79 and 189,749.79

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Solution

The fourth proportional to 342,711.60, 472,956.79 and 189,749.79 is: 261,862.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    342,711.60 : 472,956.79 = 189,749.79 : x
  2. Step 2: Convert to fraction form
    342,711.60/472,956.79 = 189,749.79/x
  3. Step 3: Cross multiply
    342,711.60x = 472,956.79 × 189,749.79
  4. Step 4: Simplify right side
    342,711.60x = 89,743,451,581.57
  5. Step 5: Solve for x
    x = 89,743,451,581.57/342,711.60
  6. Step 6: Final answer
    x = 261,862.89

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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.