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Finding the Fourth Proportional to 239,425.86, 330,405.02 and 137,453.76

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Solution

The fourth proportional to 239,425.86, 330,405.02 and 137,453.76 is: 189,684.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,425.86 : 330,405.02 = 137,453.76 : x
  2. Step 2: Convert to fraction form
    239,425.86/330,405.02 = 137,453.76/x
  3. Step 3: Cross multiply
    239,425.86x = 330,405.02 × 137,453.76
  4. Step 4: Simplify right side
    239,425.86x = 45,415,412,321.88
  5. Step 5: Solve for x
    x = 45,415,412,321.88/239,425.86
  6. Step 6: Final answer
    x = 189,684.66

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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.