Home / 635,639.20-953,455.92-215,205.28

Finding the Fourth Proportional to 635,639.20, 953,455.92 and 215,205.28

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Solution

The fourth proportional to 635,639.20, 953,455.92 and 215,205.28 is: 322,806.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    635,639.20 : 953,455.92 = 215,205.28 : x
  2. Step 2: Convert to fraction form
    635,639.20/953,455.92 = 215,205.28/x
  3. Step 3: Cross multiply
    635,639.20x = 953,455.92 × 215,205.28
  4. Step 4: Simplify right side
    635,639.20x = 205,188,748,231.26
  5. Step 5: Solve for x
    x = 205,188,748,231.26/635,639.20
  6. Step 6: Final answer
    x = 322,806.94

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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.