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Finding the Fourth Proportional to 344,600.82, 516,901.41 and 131,319

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Solution

The fourth proportional to 344,600.82, 516,901.41 and 131,319 is: 196,978.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    344,600.82 : 516,901.41 = 131,319 : x
  2. Step 2: Convert to fraction form
    344,600.82/516,901.41 = 131,319/x
  3. Step 3: Cross multiply
    344,600.82x = 516,901.41 × 131,319
  4. Step 4: Simplify right side
    344,600.82x = 67,878,976,259.79
  5. Step 5: Solve for x
    x = 67,878,976,259.79/344,600.82
  6. Step 6: Final answer
    x = 196,978.57

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.