Home / 243,143.44-335,524.28-135,720.38

Finding the Fourth Proportional to 243,143.44, 335,524.28 and 135,720.38

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Solution

The fourth proportional to 243,143.44, 335,524.28 and 135,720.38 is: 187,286.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,143.44 : 335,524.28 = 135,720.38 : x
  2. Step 2: Convert to fraction form
    243,143.44/335,524.28 = 135,720.38/x
  3. Step 3: Cross multiply
    243,143.44x = 335,524.28 × 135,720.38
  4. Step 4: Simplify right side
    243,143.44x = 45,537,482,780.83
  5. Step 5: Solve for x
    x = 45,537,482,780.83/243,143.44
  6. Step 6: Final answer
    x = 187,286.50

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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.