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Finding the Fourth Proportional to 239,718.40, 330,812.80 and 132,291.20

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Solution

The fourth proportional to 239,718.40, 330,812.80 and 132,291.20 is: 182,562.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,718.40 : 330,812.80 = 132,291.20 : x
  2. Step 2: Convert to fraction form
    239,718.40/330,812.80 = 132,291.20/x
  3. Step 3: Cross multiply
    239,718.40x = 330,812.80 × 132,291.20
  4. Step 4: Simplify right side
    239,718.40x = 43,763,622,287.36
  5. Step 5: Solve for x
    x = 43,763,622,287.36/239,718.40
  6. Step 6: Final answer
    x = 182,562.63

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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.