Home / 665,040.18-997,700.38-215,725.97

Finding the Fourth Proportional to 665,040.18, 997,700.38 and 215,725.97

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Solution

The fourth proportional to 665,040.18, 997,700.38 and 215,725.97 is: 323,634.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,040.18 : 997,700.38 = 215,725.97 : x
  2. Step 2: Convert to fraction form
    665,040.18/997,700.38 = 215,725.97/x
  3. Step 3: Cross multiply
    665,040.18x = 997,700.38 × 215,725.97
  4. Step 4: Simplify right side
    665,040.18x = 215,229,881,267.40
  5. Step 5: Solve for x
    x = 215,229,881,267.40/665,040.18
  6. Step 6: Final answer
    x = 323,634.40

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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.