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Finding the Fourth Proportional to 343,853.80, 515,780.70 and 269,204.20

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Solution

The fourth proportional to 343,853.80, 515,780.70 and 269,204.20 is: 403,806.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    343,853.80 : 515,780.70 = 269,204.20 : x
  2. Step 2: Convert to fraction form
    343,853.80/515,780.70 = 269,204.20/x
  3. Step 3: Cross multiply
    343,853.80x = 515,780.70 × 269,204.20
  4. Step 4: Simplify right side
    343,853.80x = 138,850,330,718.94
  5. Step 5: Solve for x
    x = 138,850,330,718.94/343,853.80
  6. Step 6: Final answer
    x = 403,806.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.