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Finding the Fourth Proportional to 239,565.96, 330,588.78 and 137,520.54

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Solution

The fourth proportional to 239,565.96, 330,588.78 and 137,520.54 is: 189,771.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,565.96 : 330,588.78 = 137,520.54 : x
  2. Step 2: Convert to fraction form
    239,565.96/330,588.78 = 137,520.54/x
  3. Step 3: Cross multiply
    239,565.96x = 330,588.78 × 137,520.54
  4. Step 4: Simplify right side
    239,565.96x = 45,462,747,543.54
  5. Step 5: Solve for x
    x = 45,462,747,543.54/239,565.96
  6. Step 6: Final answer
    x = 189,771.32

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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.