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Finding the Fourth Proportional to 220,534.40, 330,801.60 and 211,932.80

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Solution

The fourth proportional to 220,534.40, 330,801.60 and 211,932.80 is: 317,899.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,534.40 : 330,801.60 = 211,932.80 : x
  2. Step 2: Convert to fraction form
    220,534.40/330,801.60 = 211,932.80/x
  3. Step 3: Cross multiply
    220,534.40x = 330,801.60 × 211,932.80
  4. Step 4: Simplify right side
    220,534.40x = 70,107,709,332.48
  5. Step 5: Solve for x
    x = 70,107,709,332.48/220,534.40
  6. Step 6: Final answer
    x = 317,899.20

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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.