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Finding the Fourth Proportional to 814,978.80, 1,222,468.20 and 216,032.40

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Solution

The fourth proportional to 814,978.80, 1,222,468.20 and 216,032.40 is: 324,048.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    814,978.80 : 1,222,468.20 = 216,032.40 : x
  2. Step 2: Convert to fraction form
    814,978.80/1,222,468.20 = 216,032.40/x
  3. Step 3: Cross multiply
    814,978.80x = 1,222,468.20 × 216,032.40
  4. Step 4: Simplify right side
    814,978.80x = 264,092,739,169.68
  5. Step 5: Solve for x
    x = 264,092,739,169.68/814,978.80
  6. Step 6: Final answer
    x = 324,048.60

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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.