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Finding the Fourth Proportional to 252,910.40, 349,026.48 and 145,480.40

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Solution

The fourth proportional to 252,910.40, 349,026.48 and 145,480.40 is: 200,768.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    252,910.40 : 349,026.48 = 145,480.40 : x
  2. Step 2: Convert to fraction form
    252,910.40/349,026.48 = 145,480.40/x
  3. Step 3: Cross multiply
    252,910.40x = 349,026.48 × 145,480.40
  4. Step 4: Simplify right side
    252,910.40x = 50,776,511,920.99
  5. Step 5: Solve for x
    x = 50,776,511,920.99/252,910.40
  6. Step 6: Final answer
    x = 200,768.78

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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.