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Finding the Fourth Proportional to 219,604.80, 329,714.40 and 136,660.80

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Solution

The fourth proportional to 219,604.80, 329,714.40 and 136,660.80 is: 205,182.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,604.80 : 329,714.40 = 136,660.80 : x
  2. Step 2: Convert to fraction form
    219,604.80/329,714.40 = 136,660.80/x
  3. Step 3: Cross multiply
    219,604.80x = 329,714.40 × 136,660.80
  4. Step 4: Simplify right side
    219,604.80x = 45,059,033,675.52
  5. Step 5: Solve for x
    x = 45,059,033,675.52/219,604.80
  6. Step 6: Final answer
    x = 205,182.37

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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.