Home / 664,299.50-996,607.40-215,020.31

Finding the Fourth Proportional to 664,299.50, 996,607.40 and 215,020.31

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Solution

The fourth proportional to 664,299.50, 996,607.40 and 215,020.31 is: 322,581.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,299.50 : 996,607.40 = 215,020.31 : x
  2. Step 2: Convert to fraction form
    664,299.50/996,607.40 = 215,020.31/x
  3. Step 3: Cross multiply
    664,299.50x = 996,607.40 × 215,020.31
  4. Step 4: Simplify right side
    664,299.50x = 214,290,826,038.16
  5. Step 5: Solve for x
    x = 214,290,826,038.16/664,299.50
  6. Step 6: Final answer
    x = 322,581.65

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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.