Home / 639,935.28-959,797.86-213,474.38

Finding the Fourth Proportional to 639,935.28, 959,797.86 and 213,474.38

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Solution

The fourth proportional to 639,935.28, 959,797.86 and 213,474.38 is: 320,176.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,935.28 : 959,797.86 = 213,474.38 : x
  2. Step 2: Convert to fraction form
    639,935.28/959,797.86 = 213,474.38/x
  3. Step 3: Cross multiply
    639,935.28x = 959,797.86 × 213,474.38
  4. Step 4: Simplify right side
    639,935.28x = 204,892,253,088.83
  5. Step 5: Solve for x
    x = 204,892,253,088.83/639,935.28
  6. Step 6: Final answer
    x = 320,176.52

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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.