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Finding the Fourth Proportional to 253,287.44, 349,545.48 and 140,120.72

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Solution

The fourth proportional to 253,287.44, 349,545.48 and 140,120.72 is: 193,371.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,287.44 : 349,545.48 = 140,120.72 : x
  2. Step 2: Convert to fraction form
    253,287.44/349,545.48 = 140,120.72/x
  3. Step 3: Cross multiply
    253,287.44x = 349,545.48 × 140,120.72
  4. Step 4: Simplify right side
    253,287.44x = 48,978,564,330.35
  5. Step 5: Solve for x
    x = 48,978,564,330.35/253,287.44
  6. Step 6: Final answer
    x = 193,371.47

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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.