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Finding the Fourth Proportional to 339,002.20, 507,920.10 and 220,612.60

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Solution

The fourth proportional to 339,002.20, 507,920.10 and 220,612.60 is: 330,539.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,002.20 : 507,920.10 = 220,612.60 : x
  2. Step 2: Convert to fraction form
    339,002.20/507,920.10 = 220,612.60/x
  3. Step 3: Cross multiply
    339,002.20x = 507,920.10 × 220,612.60
  4. Step 4: Simplify right side
    339,002.20x = 112,053,573,853.26
  5. Step 5: Solve for x
    x = 112,053,573,853.26/339,002.20
  6. Step 6: Final answer
    x = 330,539.37

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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.