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Finding the Fourth Proportional to 268,209.70, 402,314.55 and 143,793.70

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Solution

The fourth proportional to 268,209.70, 402,314.55 and 143,793.70 is: 215,690.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,209.70 : 402,314.55 = 143,793.70 : x
  2. Step 2: Convert to fraction form
    268,209.70/402,314.55 = 143,793.70/x
  3. Step 3: Cross multiply
    268,209.70x = 402,314.55 × 143,793.70
  4. Step 4: Simplify right side
    268,209.70x = 57,850,297,708.34
  5. Step 5: Solve for x
    x = 57,850,297,708.34/268,209.70
  6. Step 6: Final answer
    x = 215,690.55

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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.