Home / 315,961.65-436,027.19-172,721.66

Finding the Fourth Proportional to 315,961.65, 436,027.19 and 172,721.66

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Solution

The fourth proportional to 315,961.65, 436,027.19 and 172,721.66 is: 238,355.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,961.65 : 436,027.19 = 172,721.66 : x
  2. Step 2: Convert to fraction form
    315,961.65/436,027.19 = 172,721.66/x
  3. Step 3: Cross multiply
    315,961.65x = 436,027.19 × 172,721.66
  4. Step 4: Simplify right side
    315,961.65x = 75,311,337,018.19
  5. Step 5: Solve for x
    x = 75,311,337,018.19/315,961.65
  6. Step 6: Final answer
    x = 238,355.94

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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.