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Finding the Fourth Proportional to 239,565.16, 330,527.46 and 138,943.72

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Solution

The fourth proportional to 239,565.16, 330,527.46 and 138,943.72 is: 191,700.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,565.16 : 330,527.46 = 138,943.72 : x
  2. Step 2: Convert to fraction form
    239,565.16/330,527.46 = 138,943.72/x
  3. Step 3: Cross multiply
    239,565.16x = 330,527.46 × 138,943.72
  4. Step 4: Simplify right side
    239,565.16x = 45,924,714,854.55
  5. Step 5: Solve for x
    x = 45,924,714,854.55/239,565.16
  6. Step 6: Final answer
    x = 191,700.31

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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.