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Finding the Fourth Proportional to 356,077.20, 534,115.80 and 343,635.60

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Solution

The fourth proportional to 356,077.20, 534,115.80 and 343,635.60 is: 515,453.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,077.20 : 534,115.80 = 343,635.60 : x
  2. Step 2: Convert to fraction form
    356,077.20/534,115.80 = 343,635.60/x
  3. Step 3: Cross multiply
    356,077.20x = 534,115.80 × 343,635.60
  4. Step 4: Simplify right side
    356,077.20x = 183,541,203,402.48
  5. Step 5: Solve for x
    x = 183,541,203,402.48/356,077.20
  6. Step 6: Final answer
    x = 515,453.40

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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.