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Finding the Fourth Proportional to 378,295.66, 522,051.60 and 208,535.86

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Solution

The fourth proportional to 378,295.66, 522,051.60 and 208,535.86 is: 287,781.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,295.66 : 522,051.60 = 208,535.86 : x
  2. Step 2: Convert to fraction form
    378,295.66/522,051.60 = 208,535.86/x
  3. Step 3: Cross multiply
    378,295.66x = 522,051.60 × 208,535.86
  4. Step 4: Simplify right side
    378,295.66x = 108,866,479,370.38
  5. Step 5: Solve for x
    x = 108,866,479,370.38/378,295.66
  6. Step 6: Final answer
    x = 287,781.47

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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.