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Finding the Fourth Proportional to 243,871.28, 336,555.42 and 136,434.86

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Solution

The fourth proportional to 243,871.28, 336,555.42 and 136,434.86 is: 188,287.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,871.28 : 336,555.42 = 136,434.86 : x
  2. Step 2: Convert to fraction form
    243,871.28/336,555.42 = 136,434.86/x
  3. Step 3: Cross multiply
    243,871.28x = 336,555.42 × 136,434.86
  4. Step 4: Simplify right side
    243,871.28x = 45,917,891,609.94
  5. Step 5: Solve for x
    x = 45,917,891,609.94/243,871.28
  6. Step 6: Final answer
    x = 188,287.41

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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.