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Finding the Fourth Proportional to 219,862.80, 329,794.20 and 143,755.20

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Solution

The fourth proportional to 219,862.80, 329,794.20 and 143,755.20 is: 215,632.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,862.80 : 329,794.20 = 143,755.20 : x
  2. Step 2: Convert to fraction form
    219,862.80/329,794.20 = 143,755.20/x
  3. Step 3: Cross multiply
    219,862.80x = 329,794.20 × 143,755.20
  4. Step 4: Simplify right side
    219,862.80x = 47,409,631,179.84
  5. Step 5: Solve for x
    x = 47,409,631,179.84/219,862.80
  6. Step 6: Final answer
    x = 215,632.80

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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.