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Finding the Fourth Proportional to 270,830.80, 406,246.20 and 268,987.60

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Solution

The fourth proportional to 270,830.80, 406,246.20 and 268,987.60 is: 403,481.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    270,830.80 : 406,246.20 = 268,987.60 : x
  2. Step 2: Convert to fraction form
    270,830.80/406,246.20 = 268,987.60/x
  3. Step 3: Cross multiply
    270,830.80x = 406,246.20 × 268,987.60
  4. Step 4: Simplify right side
    270,830.80x = 109,275,190,347.12
  5. Step 5: Solve for x
    x = 109,275,190,347.12/270,830.80
  6. Step 6: Final answer
    x = 403,481.40

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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.