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Finding the Fourth Proportional to 243,745.92, 336,366.96 and 136,314.72

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Solution

The fourth proportional to 243,745.92, 336,366.96 and 136,314.72 is: 188,112.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,745.92 : 336,366.96 = 136,314.72 : x
  2. Step 2: Convert to fraction form
    243,745.92/336,366.96 = 136,314.72/x
  3. Step 3: Cross multiply
    243,745.92x = 336,366.96 × 136,314.72
  4. Step 4: Simplify right side
    243,745.92x = 45,851,767,969.65
  5. Step 5: Solve for x
    x = 45,851,767,969.65/243,745.92
  6. Step 6: Final answer
    x = 188,112.97

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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.