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Finding the Fourth Proportional to 275,916.92, 380,799.16 and 155,063.30

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Solution

The fourth proportional to 275,916.92, 380,799.16 and 155,063.30 is: 214,006.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,916.92 : 380,799.16 = 155,063.30 : x
  2. Step 2: Convert to fraction form
    275,916.92/380,799.16 = 155,063.30/x
  3. Step 3: Cross multiply
    275,916.92x = 380,799.16 × 155,063.30
  4. Step 4: Simplify right side
    275,916.92x = 59,047,972,095.17
  5. Step 5: Solve for x
    x = 59,047,972,095.17/275,916.92
  6. Step 6: Final answer
    x = 214,006.35

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Why These Related Problems?

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