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Finding the Fourth Proportional to 221,570.60, 332,291.10 and 79,399.40

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Solution

The fourth proportional to 221,570.60, 332,291.10 and 79,399.40 is: 119,075.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,570.60 : 332,291.10 = 79,399.40 : x
  2. Step 2: Convert to fraction form
    221,570.60/332,291.10 = 79,399.40/x
  3. Step 3: Cross multiply
    221,570.60x = 332,291.10 × 79,399.40
  4. Step 4: Simplify right side
    221,570.60x = 26,383,713,965.34
  5. Step 5: Solve for x
    x = 26,383,713,965.34/221,570.60
  6. Step 6: Final answer
    x = 119,075.88

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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.