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Finding the Fourth Proportional to 356,070.20, 534,105.30 and 343,628.60

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Solution

The fourth proportional to 356,070.20, 534,105.30 and 343,628.60 is: 515,442.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,070.20 : 534,105.30 = 343,628.60 : x
  2. Step 2: Convert to fraction form
    356,070.20/534,105.30 = 343,628.60/x
  3. Step 3: Cross multiply
    356,070.20x = 534,105.30 × 343,628.60
  4. Step 4: Simplify right side
    356,070.20x = 183,533,856,491.58
  5. Step 5: Solve for x
    x = 183,533,856,491.58/356,070.20
  6. Step 6: Final answer
    x = 515,442.90

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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.