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Finding the Fourth Proportional to 245,902.44, 339,342.03 and 138,473.76

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Solution

The fourth proportional to 245,902.44, 339,342.03 and 138,473.76 is: 191,091.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,902.44 : 339,342.03 = 138,473.76 : x
  2. Step 2: Convert to fraction form
    245,902.44/339,342.03 = 138,473.76/x
  3. Step 3: Cross multiply
    245,902.44x = 339,342.03 × 138,473.76
  4. Step 4: Simplify right side
    245,902.44x = 46,989,966,820.13
  5. Step 5: Solve for x
    x = 46,989,966,820.13/245,902.44
  6. Step 6: Final answer
    x = 191,091.91

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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.