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Finding the Fourth Proportional to 252,056.61, 347,837.49 and 138,879.36

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Solution

The fourth proportional to 252,056.61, 347,837.49 and 138,879.36 is: 191,653.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    252,056.61 : 347,837.49 = 138,879.36 : x
  2. Step 2: Convert to fraction form
    252,056.61/347,837.49 = 138,879.36/x
  3. Step 3: Cross multiply
    252,056.61x = 347,837.49 × 138,879.36
  4. Step 4: Simplify right side
    252,056.61x = 48,307,447,995.21
  5. Step 5: Solve for x
    x = 48,307,447,995.21/252,056.61
  6. Step 6: Final answer
    x = 191,653.17

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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.