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Finding the Fourth Proportional to 342,248.31, 472,305.80 and 189,278.60

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Solution

The fourth proportional to 342,248.31, 472,305.80 and 189,278.60 is: 261,206.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    342,248.31 : 472,305.80 = 189,278.60 : x
  2. Step 2: Convert to fraction form
    342,248.31/472,305.80 = 189,278.60/x
  3. Step 3: Cross multiply
    342,248.31x = 472,305.80 × 189,278.60
  4. Step 4: Simplify right side
    342,248.31x = 89,397,378,707.55
  5. Step 5: Solve for x
    x = 89,397,378,707.55/342,248.31
  6. Step 6: Final answer
    x = 261,206.19

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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.