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Finding the Fourth Proportional to 343,378.97, 515,142.26 and 115,697.22

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Solution

The fourth proportional to 343,378.97, 515,142.26 and 115,697.22 is: 173,570.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    343,378.97 : 515,142.26 = 115,697.22 : x
  2. Step 2: Convert to fraction form
    343,378.97/515,142.26 = 115,697.22/x
  3. Step 3: Cross multiply
    343,378.97x = 515,142.26 × 115,697.22
  4. Step 4: Simplify right side
    343,378.97x = 59,600,527,386.52
  5. Step 5: Solve for x
    x = 59,600,527,386.52/343,378.97
  6. Step 6: Final answer
    x = 173,570.70

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1.5x scale

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.