Home / 618,669.18-928,082.25-219,231.90

Finding the Fourth Proportional to 618,669.18, 928,082.25 and 219,231.90

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Solution

The fourth proportional to 618,669.18, 928,082.25 and 219,231.90 is: 328,875.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    618,669.18 : 928,082.25 = 219,231.90 : x
  2. Step 2: Convert to fraction form
    618,669.18/928,082.25 = 219,231.90/x
  3. Step 3: Cross multiply
    618,669.18x = 928,082.25 × 219,231.90
  4. Step 4: Simplify right side
    618,669.18x = 203,465,235,023.78
  5. Step 5: Solve for x
    x = 203,465,235,023.78/618,669.18
  6. Step 6: Final answer
    x = 328,875.66

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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.