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Finding the Fourth Proportional to 343,588.60, 515,771.70 and 203,426.20

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Solution

The fourth proportional to 343,588.60, 515,771.70 and 203,426.20 is: 305,369.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    343,588.60 : 515,771.70 = 203,426.20 : x
  2. Step 2: Convert to fraction form
    343,588.60/515,771.70 = 203,426.20/x
  3. Step 3: Cross multiply
    343,588.60x = 515,771.70 × 203,426.20
  4. Step 4: Simplify right side
    343,588.60x = 104,921,476,998.54
  5. Step 5: Solve for x
    x = 104,921,476,998.54/343,588.60
  6. Step 6: Final answer
    x = 305,369.49

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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.