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Finding the Fourth Proportional to 371,478.30, 557,297.46 and 115,305.54

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Solution

The fourth proportional to 371,478.30, 557,297.46 and 115,305.54 is: 172,983.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,478.30 : 557,297.46 = 115,305.54 : x
  2. Step 2: Convert to fraction form
    371,478.30/557,297.46 = 115,305.54/x
  3. Step 3: Cross multiply
    371,478.30x = 557,297.46 × 115,305.54
  4. Step 4: Simplify right side
    371,478.30x = 64,259,484,565.93
  5. Step 5: Solve for x
    x = 64,259,484,565.93/371,478.30
  6. Step 6: Final answer
    x = 172,983.14

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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.