Home / 219,186.87-328,778.02-69,427.11

Finding the Fourth Proportional to 219,186.87, 328,778.02 and 69,427.11

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Solution

The fourth proportional to 219,186.87, 328,778.02 and 69,427.11 is: 104,139.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,186.87 : 328,778.02 = 69,427.11 : x
  2. Step 2: Convert to fraction form
    219,186.87/328,778.02 = 69,427.11/x
  3. Step 3: Cross multiply
    219,186.87x = 328,778.02 × 69,427.11
  4. Step 4: Simplify right side
    219,186.87x = 22,826,107,760.12
  5. Step 5: Solve for x
    x = 22,826,107,760.12/219,186.87
  6. Step 6: Final answer
    x = 104,139.94

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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.