Home / 665,013.11-997,659.96-215,699.09

Finding the Fourth Proportional to 665,013.11, 997,659.96 and 215,699.09

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Solution

The fourth proportional to 665,013.11, 997,659.96 and 215,699.09 is: 323,594.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,013.11 : 997,659.96 = 215,699.09 : x
  2. Step 2: Convert to fraction form
    665,013.11/997,659.96 = 215,699.09/x
  3. Step 3: Cross multiply
    665,013.11x = 997,659.96 × 215,699.09
  4. Step 4: Simplify right side
    665,013.11x = 215,194,345,501.44
  5. Step 5: Solve for x
    x = 215,194,345,501.44/665,013.11
  6. Step 6: Final answer
    x = 323,594.14

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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.