Home / 639,277.28-959,072.04-212,812.28

Finding the Fourth Proportional to 639,277.28, 959,072.04 and 212,812.28

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Solution

The fourth proportional to 639,277.28, 959,072.04 and 212,812.28 is: 319,270.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,277.28 : 959,072.04 = 212,812.28 : x
  2. Step 2: Convert to fraction form
    639,277.28/959,072.04 = 212,812.28/x
  3. Step 3: Cross multiply
    639,277.28x = 959,072.04 × 212,812.28
  4. Step 4: Simplify right side
    639,277.28x = 204,102,307,516.65
  5. Step 5: Solve for x
    x = 204,102,307,516.65/639,277.28
  6. Step 6: Final answer
    x = 319,270.39

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1.5x scale

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.