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Finding the Fourth Proportional to 248,114.70, 342,387.81 and 140,691.96

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Solution

The fourth proportional to 248,114.70, 342,387.81 and 140,691.96 is: 194,148.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    248,114.70 : 342,387.81 = 140,691.96 : x
  2. Step 2: Convert to fraction form
    248,114.70/342,387.81 = 140,691.96/x
  3. Step 3: Cross multiply
    248,114.70x = 342,387.81 × 140,691.96
  4. Step 4: Simplify right side
    248,114.70x = 48,171,212,069.01
  5. Step 5: Solve for x
    x = 48,171,212,069.01/248,114.70
  6. Step 6: Final answer
    x = 194,148.96

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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.