Home / 665,143.28-997,456.08-215,755.48

Finding the Fourth Proportional to 665,143.28, 997,456.08 and 215,755.48

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Solution

The fourth proportional to 665,143.28, 997,456.08 and 215,755.48 is: 323,549.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,143.28 : 997,456.08 = 215,755.48 : x
  2. Step 2: Convert to fraction form
    665,143.28/997,456.08 = 215,755.48/x
  3. Step 3: Cross multiply
    665,143.28x = 997,456.08 × 215,755.48
  4. Step 4: Simplify right side
    665,143.28x = 215,206,610,332.04
  5. Step 5: Solve for x
    x = 215,206,610,332.04/665,143.28
  6. Step 6: Final answer
    x = 323,549.25

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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.