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Finding the Fourth Proportional to 219,033.20, 328,549.80 and 71,289.20

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Solution

The fourth proportional to 219,033.20, 328,549.80 and 71,289.20 is: 106,933.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,033.20 : 328,549.80 = 71,289.20 : x
  2. Step 2: Convert to fraction form
    219,033.20/328,549.80 = 71,289.20/x
  3. Step 3: Cross multiply
    219,033.20x = 328,549.80 × 71,289.20
  4. Step 4: Simplify right side
    219,033.20x = 23,422,052,402.16
  5. Step 5: Solve for x
    x = 23,422,052,402.16/219,033.20
  6. Step 6: Final answer
    x = 106,933.80

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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.