Home / 664,480.10-996,865.95-215,221.70

Finding the Fourth Proportional to 664,480.10, 996,865.95 and 215,221.70

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Solution

The fourth proportional to 664,480.10, 996,865.95 and 215,221.70 is: 322,879.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,480.10 : 996,865.95 = 215,221.70 : x
  2. Step 2: Convert to fraction form
    664,480.10/996,865.95 = 215,221.70/x
  3. Step 3: Cross multiply
    664,480.10x = 996,865.95 × 215,221.70
  4. Step 4: Simplify right side
    664,480.10x = 214,547,184,431.12
  5. Step 5: Solve for x
    x = 214,547,184,431.12/664,480.10
  6. Step 6: Final answer
    x = 322,879.77

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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.