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Finding the Fourth Proportional to 356,239, 534,591.78 and 134,623

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Solution

The fourth proportional to 356,239, 534,591.78 and 134,623 is: 202,022.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,239 : 534,591.78 = 134,623 : x
  2. Step 2: Convert to fraction form
    356,239/534,591.78 = 134,623/x
  3. Step 3: Cross multiply
    356,239x = 534,591.78 × 134,623
  4. Step 4: Simplify right side
    356,239x = 71,968,349,198.94
  5. Step 5: Solve for x
    x = 71,968,349,198.94/356,239
  6. Step 6: Final answer
    x = 202,022.66

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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.