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Finding the Fourth Proportional to 540,112.20, 810,168.30 and 329,987.40

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Solution

The fourth proportional to 540,112.20, 810,168.30 and 329,987.40 is: 494,981.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    540,112.20 : 810,168.30 = 329,987.40 : x
  2. Step 2: Convert to fraction form
    540,112.20/810,168.30 = 329,987.40/x
  3. Step 3: Cross multiply
    540,112.20x = 810,168.30 × 329,987.40
  4. Step 4: Simplify right side
    540,112.20x = 267,345,330,879.42
  5. Step 5: Solve for x
    x = 267,345,330,879.42/540,112.20
  6. Step 6: Final answer
    x = 494,981.10

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Double scale
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Similar ratio
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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.