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Finding the Fourth Proportional to 255,310.20, 382,965.30 and 65,770.20

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Solution

The fourth proportional to 255,310.20, 382,965.30 and 65,770.20 is: 98,655.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,310.20 : 382,965.30 = 65,770.20 : x
  2. Step 2: Convert to fraction form
    255,310.20/382,965.30 = 65,770.20/x
  3. Step 3: Cross multiply
    255,310.20x = 382,965.30 × 65,770.20
  4. Step 4: Simplify right side
    255,310.20x = 25,187,704,374.06
  5. Step 5: Solve for x
    x = 25,187,704,374.06/255,310.20
  6. Step 6: Final answer
    x = 98,655.30

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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.