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Finding the Fourth Proportional to 245,856.72, 339,292.74 and 136,960.92

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Solution

The fourth proportional to 245,856.72, 339,292.74 and 136,960.92 is: 189,011.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,856.72 : 339,292.74 = 136,960.92 : x
  2. Step 2: Convert to fraction form
    245,856.72/339,292.74 = 136,960.92/x
  3. Step 3: Cross multiply
    245,856.72x = 339,292.74 × 136,960.92
  4. Step 4: Simplify right side
    245,856.72x = 46,469,845,819.72
  5. Step 5: Solve for x
    x = 46,469,845,819.72/245,856.72
  6. Step 6: Final answer
    x = 189,011.90

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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.