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Finding the Fourth Proportional to 239,404.82, 330,347.57 and 137,434.73

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Solution

The fourth proportional to 239,404.82, 330,347.57 and 137,434.73 is: 189,642.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,404.82 : 330,347.57 = 137,434.73 : x
  2. Step 2: Convert to fraction form
    239,404.82/330,347.57 = 137,434.73/x
  3. Step 3: Cross multiply
    239,404.82x = 330,347.57 × 137,434.73
  4. Step 4: Simplify right side
    239,404.82x = 45,401,226,750.19
  5. Step 5: Solve for x
    x = 45,401,226,750.19/239,404.82
  6. Step 6: Final answer
    x = 189,642.08

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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.