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Finding the Fourth Proportional to 243,542.75, 336,074.51 and 134,640.56

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Solution

The fourth proportional to 243,542.75, 336,074.51 and 134,640.56 is: 185,795.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,542.75 : 336,074.51 = 134,640.56 : x
  2. Step 2: Convert to fraction form
    243,542.75/336,074.51 = 134,640.56/x
  3. Step 3: Cross multiply
    243,542.75x = 336,074.51 × 134,640.56
  4. Step 4: Simplify right side
    243,542.75x = 45,249,261,404.91
  5. Step 5: Solve for x
    x = 45,249,261,404.91/243,542.75
  6. Step 6: Final answer
    x = 185,795.97

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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.