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Finding the Fourth Proportional to 248,663.01, 343,150.30 and 138,288.42

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Solution

The fourth proportional to 248,663.01, 343,150.30 and 138,288.42 is: 190,835.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    248,663.01 : 343,150.30 = 138,288.42 : x
  2. Step 2: Convert to fraction form
    248,663.01/343,150.30 = 138,288.42/x
  3. Step 3: Cross multiply
    248,663.01x = 343,150.30 × 138,288.42
  4. Step 4: Simplify right side
    248,663.01x = 47,453,712,809.53
  5. Step 5: Solve for x
    x = 47,453,712,809.53/248,663.01
  6. Step 6: Final answer
    x = 190,835.43

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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.