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Finding the Fourth Proportional to 253,394.48, 349,691.64 and 140,227.76

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Solution

The fourth proportional to 253,394.48, 349,691.64 and 140,227.76 is: 193,518.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,394.48 : 349,691.64 = 140,227.76 : x
  2. Step 2: Convert to fraction form
    253,394.48/349,691.64 = 140,227.76/x
  3. Step 3: Cross multiply
    253,394.48x = 349,691.64 × 140,227.76
  4. Step 4: Simplify right side
    253,394.48x = 49,036,475,367.93
  5. Step 5: Solve for x
    x = 49,036,475,367.93/253,394.48
  6. Step 6: Final answer
    x = 193,518.33

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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.