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Finding the Fourth Proportional to 343,772.33, 515,665.15 and 119,140.16

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Solution

The fourth proportional to 343,772.33, 515,665.15 and 119,140.16 is: 178,712.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    343,772.33 : 515,665.15 = 119,140.16 : x
  2. Step 2: Convert to fraction form
    343,772.33/515,665.15 = 119,140.16/x
  3. Step 3: Cross multiply
    343,772.33x = 515,665.15 × 119,140.16
  4. Step 4: Simplify right side
    343,772.33x = 61,436,425,601.25
  5. Step 5: Solve for x
    x = 61,436,425,601.25/343,772.33
  6. Step 6: Final answer
    x = 178,712.54

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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.