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Finding the Fourth Proportional to 213,622.20, 320,433.30 and 203,254.20

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Solution

The fourth proportional to 213,622.20, 320,433.30 and 203,254.20 is: 304,881.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,622.20 : 320,433.30 = 203,254.20 : x
  2. Step 2: Convert to fraction form
    213,622.20/320,433.30 = 203,254.20/x
  3. Step 3: Cross multiply
    213,622.20x = 320,433.30 × 203,254.20
  4. Step 4: Simplify right side
    213,622.20x = 65,129,414,044.86
  5. Step 5: Solve for x
    x = 65,129,414,044.86/213,622.20
  6. Step 6: Final answer
    x = 304,881.30

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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.