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Finding the Fourth Proportional to 239,374.64, 330,339.20 and 131,948.80

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Solution

The fourth proportional to 239,374.64, 330,339.20 and 131,948.80 is: 182,090.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,374.64 : 330,339.20 = 131,948.80 : x
  2. Step 2: Convert to fraction form
    239,374.64/330,339.20 = 131,948.80/x
  3. Step 3: Cross multiply
    239,374.64x = 330,339.20 × 131,948.80
  4. Step 4: Simplify right side
    239,374.64x = 43,587,861,032.96
  5. Step 5: Solve for x
    x = 43,587,861,032.96/239,374.64
  6. Step 6: Final answer
    x = 182,090.55

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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.