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Finding the Fourth Proportional to 379,842.72, 569,362.32 and 143,083.04

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Solution

The fourth proportional to 379,842.72, 569,362.32 and 143,083.04 is: 214,473.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    379,842.72 : 569,362.32 = 143,083.04 : x
  2. Step 2: Convert to fraction form
    379,842.72/569,362.32 = 143,083.04/x
  3. Step 3: Cross multiply
    379,842.72x = 569,362.32 × 143,083.04
  4. Step 4: Simplify right side
    379,842.72x = 81,466,091,607.05
  5. Step 5: Solve for x
    x = 81,466,091,607.05/379,842.72
  6. Step 6: Final answer
    x = 214,473.22

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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.