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Finding the Fourth Proportional to 220,537.98, 330,916.32 and 87,415.29

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Solution

The fourth proportional to 220,537.98, 330,916.32 and 87,415.29 is: 131,166.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,537.98 : 330,916.32 = 87,415.29 : x
  2. Step 2: Convert to fraction form
    220,537.98/330,916.32 = 87,415.29/x
  3. Step 3: Cross multiply
    220,537.98x = 330,916.32 × 87,415.29
  4. Step 4: Simplify right side
    220,537.98x = 28,927,146,078.53
  5. Step 5: Solve for x
    x = 28,927,146,078.53/220,537.98
  6. Step 6: Final answer
    x = 131,166.28

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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.