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Finding the Fourth Proportional to 219,042.80, 328,175.40 and 135,839.60

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Solution

The fourth proportional to 219,042.80, 328,175.40 and 135,839.60 is: 203,518.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,042.80 : 328,175.40 = 135,839.60 : x
  2. Step 2: Convert to fraction form
    219,042.80/328,175.40 = 135,839.60/x
  3. Step 3: Cross multiply
    219,042.80x = 328,175.40 × 135,839.60
  4. Step 4: Simplify right side
    219,042.80x = 44,579,215,065.84
  5. Step 5: Solve for x
    x = 44,579,215,065.84/219,042.80
  6. Step 6: Final answer
    x = 203,518.29

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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.