Home / 665,021.45-997,672.36-215,707.36

Finding the Fourth Proportional to 665,021.45, 997,672.36 and 215,707.36

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Solution

The fourth proportional to 665,021.45, 997,672.36 and 215,707.36 is: 323,606.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,021.45 : 997,672.36 = 215,707.36 : x
  2. Step 2: Convert to fraction form
    665,021.45/997,672.36 = 215,707.36/x
  3. Step 3: Cross multiply
    665,021.45x = 997,672.36 × 215,707.36
  4. Step 4: Simplify right side
    665,021.45x = 215,205,270,920.57
  5. Step 5: Solve for x
    x = 215,205,270,920.57/665,021.45
  6. Step 6: Final answer
    x = 323,606.51

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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.