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Finding the Fourth Proportional to 352,312.56, 485,520.17 and 345,834.81

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Solution

The fourth proportional to 352,312.56, 485,520.17 and 345,834.81 is: 476,593.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,312.56 : 485,520.17 = 345,834.81 : x
  2. Step 2: Convert to fraction form
    352,312.56/485,520.17 = 345,834.81/x
  3. Step 3: Cross multiply
    352,312.56x = 485,520.17 × 345,834.81
  4. Step 4: Simplify right side
    352,312.56x = 167,909,774,013.94
  5. Step 5: Solve for x
    x = 167,909,774,013.94/352,312.56
  6. Step 6: Final answer
    x = 476,593.21

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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.