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Finding the Fourth Proportional to 638,160.45, 880,679.88 and 351,699

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Solution

The fourth proportional to 638,160.45, 880,679.88 and 351,699 is: 485,354.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,160.45 : 880,679.88 = 351,699 : x
  2. Step 2: Convert to fraction form
    638,160.45/880,679.88 = 351,699/x
  3. Step 3: Cross multiply
    638,160.45x = 880,679.88 × 351,699
  4. Step 4: Simplify right side
    638,160.45x = 309,734,233,116.12
  5. Step 5: Solve for x
    x = 309,734,233,116.12/638,160.45
  6. Step 6: Final answer
    x = 485,354.79

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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.