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Finding the Fourth Proportional to 287,996.72, 432,187.90 and 119,517.22

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Solution

The fourth proportional to 287,996.72, 432,187.90 and 119,517.22 is: 179,355.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,996.72 : 432,187.90 = 119,517.22 : x
  2. Step 2: Convert to fraction form
    287,996.72/432,187.90 = 119,517.22/x
  3. Step 3: Cross multiply
    287,996.72x = 432,187.90 × 119,517.22
  4. Step 4: Simplify right side
    287,996.72x = 51,653,896,325.64
  5. Step 5: Solve for x
    x = 51,653,896,325.64/287,996.72
  6. Step 6: Final answer
    x = 179,355.85

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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.