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Finding the Fourth Proportional to 239,417.57, 330,396.27 and 137,449.64

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Solution

The fourth proportional to 239,417.57, 330,396.27 and 137,449.64 is: 189,680.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,417.57 : 330,396.27 = 137,449.64 : x
  2. Step 2: Convert to fraction form
    239,417.57/330,396.27 = 137,449.64/x
  3. Step 3: Cross multiply
    239,417.57x = 330,396.27 × 137,449.64
  4. Step 4: Simplify right side
    239,417.57x = 45,412,848,679.40
  5. Step 5: Solve for x
    x = 45,412,848,679.40/239,417.57
  6. Step 6: Final answer
    x = 189,680.52

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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.