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Finding the Fourth Proportional to 270,972.40, 406,458.60 and 84,002.80

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Solution

The fourth proportional to 270,972.40, 406,458.60 and 84,002.80 is: 126,004.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    270,972.40 : 406,458.60 = 84,002.80 : x
  2. Step 2: Convert to fraction form
    270,972.40/406,458.60 = 84,002.80/x
  3. Step 3: Cross multiply
    270,972.40x = 406,458.60 × 84,002.80
  4. Step 4: Simplify right side
    270,972.40x = 34,143,660,484.08
  5. Step 5: Solve for x
    x = 34,143,660,484.08/270,972.40
  6. Step 6: Final answer
    x = 126,004.20

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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.