Home / 243,239.28-335,667-135,811.12

Finding the Fourth Proportional to 243,239.28, 335,667 and 135,811.12

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Solution

The fourth proportional to 243,239.28, 335,667 and 135,811.12 is: 187,417.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,239.28 : 335,667 = 135,811.12 : x
  2. Step 2: Convert to fraction form
    243,239.28/335,667 = 135,811.12/x
  3. Step 3: Cross multiply
    243,239.28x = 335,667 × 135,811.12
  4. Step 4: Simplify right side
    243,239.28x = 45,587,311,217.04
  5. Step 5: Solve for x
    x = 45,587,311,217.04/243,239.28
  6. Step 6: Final answer
    x = 187,417.56

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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.