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Finding the Fourth Proportional to 252,810.78, 348,879.99 and 139,634.46

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Solution

The fourth proportional to 252,810.78, 348,879.99 and 139,634.46 is: 192,696.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    252,810.78 : 348,879.99 = 139,634.46 : x
  2. Step 2: Convert to fraction form
    252,810.78/348,879.99 = 139,634.46/x
  3. Step 3: Cross multiply
    252,810.78x = 348,879.99 × 139,634.46
  4. Step 4: Simplify right side
    252,810.78x = 48,715,669,008.46
  5. Step 5: Solve for x
    x = 48,715,669,008.46/252,810.78
  6. Step 6: Final answer
    x = 192,696.17

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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.