Home / 378,342.85-522,116.70-208,583.05

Finding the Fourth Proportional to 378,342.85, 522,116.70 and 208,583.05

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Solution

The fourth proportional to 378,342.85, 522,116.70 and 208,583.05 is: 287,846.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,342.85 : 522,116.70 = 208,583.05 : x
  2. Step 2: Convert to fraction form
    378,342.85/522,116.70 = 208,583.05/x
  3. Step 3: Cross multiply
    378,342.85x = 522,116.70 × 208,583.05
  4. Step 4: Simplify right side
    378,342.85x = 108,904,693,741.94
  5. Step 5: Solve for x
    x = 108,904,693,741.94/378,342.85
  6. Step 6: Final answer
    x = 287,846.58

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.