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Finding the Fourth Proportional to 239,762.40, 330,872.78 and 130,867.72

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Solution

The fourth proportional to 239,762.40, 330,872.78 and 130,867.72 is: 180,597.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,762.40 : 330,872.78 = 130,867.72 : x
  2. Step 2: Convert to fraction form
    239,762.40/330,872.78 = 130,867.72/x
  3. Step 3: Cross multiply
    239,762.40x = 330,872.78 × 130,867.72
  4. Step 4: Simplify right side
    239,762.40x = 43,300,566,328.66
  5. Step 5: Solve for x
    x = 43,300,566,328.66/239,762.40
  6. Step 6: Final answer
    x = 180,597.82

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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.