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Finding the Fourth Proportional to 342,754.59, 472,995.55 and 189,789.49

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Solution

The fourth proportional to 342,754.59, 472,995.55 and 189,789.49 is: 261,906.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    342,754.59 : 472,995.55 = 189,789.49 : x
  2. Step 2: Convert to fraction form
    342,754.59/472,995.55 = 189,789.49/x
  3. Step 3: Cross multiply
    342,754.59x = 472,995.55 × 189,789.49
  4. Step 4: Simplify right side
    342,754.59x = 89,769,584,206.77
  5. Step 5: Solve for x
    x = 89,769,584,206.77/342,754.59
  6. Step 6: Final answer
    x = 261,906.29

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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.