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Finding the Fourth Proportional to 639,227.84, 959,176.64 and 240,144

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Solution

The fourth proportional to 639,227.84, 959,176.64 and 240,144 is: 360,341.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,227.84 : 959,176.64 = 240,144 : x
  2. Step 2: Convert to fraction form
    639,227.84/959,176.64 = 240,144/x
  3. Step 3: Cross multiply
    639,227.84x = 959,176.64 × 240,144
  4. Step 4: Simplify right side
    639,227.84x = 230,340,515,036.16
  5. Step 5: Solve for x
    x = 230,340,515,036.16/639,227.84
  6. Step 6: Final answer
    x = 360,341.81

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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.