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Finding the Fourth Proportional to 265,744.80, 398,617.20 and 255,247.20

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Solution

The fourth proportional to 265,744.80, 398,617.20 and 255,247.20 is: 382,870.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    265,744.80 : 398,617.20 = 255,247.20 : x
  2. Step 2: Convert to fraction form
    265,744.80/398,617.20 = 255,247.20/x
  3. Step 3: Cross multiply
    265,744.80x = 398,617.20 × 255,247.20
  4. Step 4: Simplify right side
    265,744.80x = 101,745,924,171.84
  5. Step 5: Solve for x
    x = 101,745,924,171.84/265,744.80
  6. Step 6: Final answer
    x = 382,870.80

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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.