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Finding the Fourth Proportional to 268,279.40, 402,419.10 and 264,342.80

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Solution

The fourth proportional to 268,279.40, 402,419.10 and 264,342.80 is: 396,514.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,279.40 : 402,419.10 = 264,342.80 : x
  2. Step 2: Convert to fraction form
    268,279.40/402,419.10 = 264,342.80/x
  3. Step 3: Cross multiply
    268,279.40x = 402,419.10 × 264,342.80
  4. Step 4: Simplify right side
    268,279.40x = 106,376,591,667.48
  5. Step 5: Solve for x
    x = 106,376,591,667.48/268,279.40
  6. Step 6: Final answer
    x = 396,514.20

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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.