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Finding the Fourth Proportional to 344,435.20, 515,731.20 and 219,097.60

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Solution

The fourth proportional to 344,435.20, 515,731.20 and 219,097.60 is: 328,060.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    344,435.20 : 515,731.20 = 219,097.60 : x
  2. Step 2: Convert to fraction form
    344,435.20/515,731.20 = 219,097.60/x
  3. Step 3: Cross multiply
    344,435.20x = 515,731.20 × 219,097.60
  4. Step 4: Simplify right side
    344,435.20x = 112,995,468,165.12
  5. Step 5: Solve for x
    x = 112,995,468,165.12/344,435.20
  6. Step 6: Final answer
    x = 328,060.16

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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.