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Finding the Fourth Proportional to 251,952.74, 347,694.75 and 138,775.49

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Solution

The fourth proportional to 251,952.74, 347,694.75 and 138,775.49 is: 191,510.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,952.74 : 347,694.75 = 138,775.49 : x
  2. Step 2: Convert to fraction form
    251,952.74/347,694.75 = 138,775.49/x
  3. Step 3: Cross multiply
    251,952.74x = 347,694.75 × 138,775.49
  4. Step 4: Simplify right side
    251,952.74x = 48,251,509,301.68
  5. Step 5: Solve for x
    x = 48,251,509,301.68/251,952.74
  6. Step 6: Final answer
    x = 191,510.16

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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.