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Finding the Fourth Proportional to 342,750.96, 472,990.55 and 189,785.86

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Solution

The fourth proportional to 342,750.96, 472,990.55 and 189,785.86 is: 261,901.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    342,750.96 : 472,990.55 = 189,785.86 : x
  2. Step 2: Convert to fraction form
    342,750.96/472,990.55 = 189,785.86/x
  3. Step 3: Cross multiply
    342,750.96x = 472,990.55 × 189,785.86
  4. Step 4: Simplify right side
    342,750.96x = 89,766,917,595.61
  5. Step 5: Solve for x
    x = 89,766,917,595.61/342,750.96
  6. Step 6: Final answer
    x = 261,901.29

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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.