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Finding the Fourth Proportional to 219,156.80, 329,042.40 and 136,212.80

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Solution

The fourth proportional to 219,156.80, 329,042.40 and 136,212.80 is: 204,510.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,156.80 : 329,042.40 = 136,212.80 : x
  2. Step 2: Convert to fraction form
    219,156.80/329,042.40 = 136,212.80/x
  3. Step 3: Cross multiply
    219,156.80x = 329,042.40 × 136,212.80
  4. Step 4: Simplify right side
    219,156.80x = 44,819,786,622.72
  5. Step 5: Solve for x
    x = 44,819,786,622.72/219,156.80
  6. Step 6: Final answer
    x = 204,510.13

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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.