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Finding the Fourth Proportional to 424,458.33, 636,710.18 and 108,917.97

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Solution

The fourth proportional to 424,458.33, 636,710.18 and 108,917.97 is: 163,382.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    424,458.33 : 636,710.18 = 108,917.97 : x
  2. Step 2: Convert to fraction form
    424,458.33/636,710.18 = 108,917.97/x
  3. Step 3: Cross multiply
    424,458.33x = 636,710.18 × 108,917.97
  4. Step 4: Simplify right side
    424,458.33x = 69,349,179,739.34
  5. Step 5: Solve for x
    x = 69,349,179,739.34/424,458.33
  6. Step 6: Final answer
    x = 163,382.77

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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.