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Finding the Fourth Proportional to 219,043.82, 328,424.46 and 85,937.54

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Solution

The fourth proportional to 219,043.82, 328,424.46 and 85,937.54 is: 128,850.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,043.82 : 328,424.46 = 85,937.54 : x
  2. Step 2: Convert to fraction form
    219,043.82/328,424.46 = 85,937.54/x
  3. Step 3: Cross multiply
    219,043.82x = 328,424.46 × 85,937.54
  4. Step 4: Simplify right side
    219,043.82x = 28,223,988,526.11
  5. Step 5: Solve for x
    x = 28,223,988,526.11/219,043.82
  6. Step 6: Final answer
    x = 128,850.88

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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.