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Finding the Fourth Proportional to 247,279.70, 341,264.34 and 138,394.98

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Solution

The fourth proportional to 247,279.70, 341,264.34 and 138,394.98 is: 190,995.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    247,279.70 : 341,264.34 = 138,394.98 : x
  2. Step 2: Convert to fraction form
    247,279.70/341,264.34 = 138,394.98/x
  3. Step 3: Cross multiply
    247,279.70x = 341,264.34 × 138,394.98
  4. Step 4: Simplify right side
    247,279.70x = 47,229,271,509.01
  5. Step 5: Solve for x
    x = 47,229,271,509.01/247,279.70
  6. Step 6: Final answer
    x = 190,995.34

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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.