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Finding the Fourth Proportional to 343,893.40, 515,840.10 and 224,321.20

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Solution

The fourth proportional to 343,893.40, 515,840.10 and 224,321.20 is: 336,481.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    343,893.40 : 515,840.10 = 224,321.20 : x
  2. Step 2: Convert to fraction form
    343,893.40/515,840.10 = 224,321.20/x
  3. Step 3: Cross multiply
    343,893.40x = 515,840.10 × 224,321.20
  4. Step 4: Simplify right side
    343,893.40x = 115,713,870,240.12
  5. Step 5: Solve for x
    x = 115,713,870,240.12/343,893.40
  6. Step 6: Final answer
    x = 336,481.80

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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.