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Finding the Fourth Proportional to 30,213.20, 45,230.20 and 22,456.40

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Solution

The fourth proportional to 30,213.20, 45,230.20 and 22,456.40 is: 33,618.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,213.20 : 45,230.20 = 22,456.40 : x
  2. Step 2: Convert to fraction form
    30,213.20/45,230.20 = 22,456.40/x
  3. Step 3: Cross multiply
    30,213.20x = 45,230.20 × 22,456.40
  4. Step 4: Simplify right side
    30,213.20x = 1,015,707,463.28
  5. Step 5: Solve for x
    x = 1,015,707,463.28/30,213.20
  6. Step 6: Final answer
    x = 33,618.00

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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.