Home / 665,009.21-997,654.07-215,695.18

Finding the Fourth Proportional to 665,009.21, 997,654.07 and 215,695.18

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Solution

The fourth proportional to 665,009.21, 997,654.07 and 215,695.18 is: 323,588.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,009.21 : 997,654.07 = 215,695.18 : x
  2. Step 2: Convert to fraction form
    665,009.21/997,654.07 = 215,695.18/x
  3. Step 3: Cross multiply
    665,009.21x = 997,654.07 × 215,695.18
  4. Step 4: Simplify right side
    665,009.21x = 215,189,174,206.38
  5. Step 5: Solve for x
    x = 215,189,174,206.38/665,009.21
  6. Step 6: Final answer
    x = 323,588.26

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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.