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Finding the Fourth Proportional to 308,910, 426,076.02 and 283,498.41

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Solution

The fourth proportional to 308,910, 426,076.02 and 283,498.41 is: 391,026.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,910 : 426,076.02 = 283,498.41 : x
  2. Step 2: Convert to fraction form
    308,910/426,076.02 = 283,498.41/x
  3. Step 3: Cross multiply
    308,910x = 426,076.02 × 283,498.41
  4. Step 4: Simplify right side
    308,910x = 120,791,874,209.13
  5. Step 5: Solve for x
    x = 120,791,874,209.13/308,910
  6. Step 6: Final answer
    x = 391,026.11

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.