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Finding the Fourth Proportional to 386,376.67, 579,558.52 and 105,893.92

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Solution

The fourth proportional to 386,376.67, 579,558.52 and 105,893.92 is: 158,839.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,376.67 : 579,558.52 = 105,893.92 : x
  2. Step 2: Convert to fraction form
    386,376.67/579,558.52 = 105,893.92/x
  3. Step 3: Cross multiply
    386,376.67x = 579,558.52 × 105,893.92
  4. Step 4: Simplify right side
    386,376.67x = 61,371,723,552.20
  5. Step 5: Solve for x
    x = 61,371,723,552.20/386,376.67
  6. Step 6: Final answer
    x = 158,839.10

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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.