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Finding the Fourth Proportional to 386,636.48, 533,551.82 and 216,866.96

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Solution

The fourth proportional to 386,636.48, 533,551.82 and 216,866.96 is: 299,272.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,636.48 : 533,551.82 = 216,866.96 : x
  2. Step 2: Convert to fraction form
    386,636.48/533,551.82 = 216,866.96/x
  3. Step 3: Cross multiply
    386,636.48x = 533,551.82 × 216,866.96
  4. Step 4: Simplify right side
    386,636.48x = 115,709,761,205.87
  5. Step 5: Solve for x
    x = 115,709,761,205.87/386,636.48
  6. Step 6: Final answer
    x = 299,272.75

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