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Finding the Fourth Proportional to 247,156.37, 341,073.21 and 138,259.30

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Solution

The fourth proportional to 247,156.37, 341,073.21 and 138,259.30 is: 190,796.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    247,156.37 : 341,073.21 = 138,259.30 : x
  2. Step 2: Convert to fraction form
    247,156.37/341,073.21 = 138,259.30/x
  3. Step 3: Cross multiply
    247,156.37x = 341,073.21 × 138,259.30
  4. Step 4: Simplify right side
    247,156.37x = 47,156,543,263.35
  5. Step 5: Solve for x
    x = 47,156,543,263.35/247,156.37
  6. Step 6: Final answer
    x = 190,796.39

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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.