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Finding the Fourth Proportional to 347,144.94, 518,410.42 and 343,387.26

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Solution

The fourth proportional to 347,144.94, 518,410.42 and 343,387.26 is: 512,798.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,144.94 : 518,410.42 = 343,387.26 : x
  2. Step 2: Convert to fraction form
    347,144.94/518,410.42 = 343,387.26/x
  3. Step 3: Cross multiply
    347,144.94x = 518,410.42 × 343,387.26
  4. Step 4: Simplify right side
    347,144.94x = 178,015,532,820.78
  5. Step 5: Solve for x
    x = 178,015,532,820.78/347,144.94
  6. Step 6: Final answer
    x = 512,798.87

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.