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Finding the Fourth Proportional to 239,510.56, 330,524.48 and 137,542.72

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Solution

The fourth proportional to 239,510.56, 330,524.48 and 137,542.72 is: 189,808.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,510.56 : 330,524.48 = 137,542.72 : x
  2. Step 2: Convert to fraction form
    239,510.56/330,524.48 = 137,542.72/x
  3. Step 3: Cross multiply
    239,510.56x = 330,524.48 × 137,542.72
  4. Step 4: Simplify right side
    239,510.56x = 45,461,236,005.79
  5. Step 5: Solve for x
    x = 45,461,236,005.79/239,510.56
  6. Step 6: Final answer
    x = 189,808.90

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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.