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Finding the Fourth Proportional to 268,780.60, 403,170.90 and 239,750.20

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Solution

The fourth proportional to 268,780.60, 403,170.90 and 239,750.20 is: 359,625.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,780.60 : 403,170.90 = 239,750.20 : x
  2. Step 2: Convert to fraction form
    268,780.60/403,170.90 = 239,750.20/x
  3. Step 3: Cross multiply
    268,780.60x = 403,170.90 × 239,750.20
  4. Step 4: Simplify right side
    268,780.60x = 96,660,303,909.18
  5. Step 5: Solve for x
    x = 96,660,303,909.18/268,780.60
  6. Step 6: Final answer
    x = 359,625.30

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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.