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Finding the Fourth Proportional to 243,301.86, 335,718.27 and 135,866.70

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Solution

The fourth proportional to 243,301.86, 335,718.27 and 135,866.70 is: 187,474.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,301.86 : 335,718.27 = 135,866.70 : x
  2. Step 2: Convert to fraction form
    243,301.86/335,718.27 = 135,866.70/x
  3. Step 3: Cross multiply
    243,301.86x = 335,718.27 × 135,866.70
  4. Step 4: Simplify right side
    243,301.86x = 45,612,933,474.61
  5. Step 5: Solve for x
    x = 45,612,933,474.61/243,301.86
  6. Step 6: Final answer
    x = 187,474.66

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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.