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Finding the Fourth Proportional to 265,655.20, 398,482.80 and 255,287.20

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Solution

The fourth proportional to 265,655.20, 398,482.80 and 255,287.20 is: 382,930.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    265,655.20 : 398,482.80 = 255,287.20 : x
  2. Step 2: Convert to fraction form
    265,655.20/398,482.80 = 255,287.20/x
  3. Step 3: Cross multiply
    265,655.20x = 398,482.80 × 255,287.20
  4. Step 4: Simplify right side
    265,655.20x = 101,727,558,260.16
  5. Step 5: Solve for x
    x = 101,727,558,260.16/265,655.20
  6. Step 6: Final answer
    x = 382,930.80

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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.