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Finding the Fourth Proportional to 253,575.76, 349,945.48 and 140,398.50

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Solution

The fourth proportional to 253,575.76, 349,945.48 and 140,398.50 is: 193,755.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,575.76 : 349,945.48 = 140,398.50 : x
  2. Step 2: Convert to fraction form
    253,575.76/349,945.48 = 140,398.50/x
  3. Step 3: Cross multiply
    253,575.76x = 349,945.48 × 140,398.50
  4. Step 4: Simplify right side
    253,575.76x = 49,131,820,473.78
  5. Step 5: Solve for x
    x = 49,131,820,473.78/253,575.76
  6. Step 6: Final answer
    x = 193,755.98

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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.