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Finding the Fourth Proportional to 239,959.72, 359,983.32 and 120,079.36

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Solution

The fourth proportional to 239,959.72, 359,983.32 and 120,079.36 is: 180,140.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,959.72 : 359,983.32 = 120,079.36 : x
  2. Step 2: Convert to fraction form
    239,959.72/359,983.32 = 120,079.36/x
  3. Step 3: Cross multiply
    239,959.72x = 359,983.32 × 120,079.36
  4. Step 4: Simplify right side
    239,959.72x = 43,226,566,676.28
  5. Step 5: Solve for x
    x = 43,226,566,676.28/239,959.72
  6. Step 6: Final answer
    x = 180,140.93

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.