Home / 639,277.52-959,072.40-212,812.52

Finding the Fourth Proportional to 639,277.52, 959,072.40 and 212,812.52

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Solution

The fourth proportional to 639,277.52, 959,072.40 and 212,812.52 is: 319,270.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,277.52 : 959,072.40 = 212,812.52 : x
  2. Step 2: Convert to fraction form
    639,277.52/959,072.40 = 212,812.52/x
  3. Step 3: Cross multiply
    639,277.52x = 959,072.40 × 212,812.52
  4. Step 4: Simplify right side
    639,277.52x = 204,102,609,511.09
  5. Step 5: Solve for x
    x = 204,102,609,511.09/639,277.52
  6. Step 6: Final answer
    x = 319,270.75

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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.