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Finding the Fourth Proportional to 352,174.64, 485,705.40 and 231,223.28

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Solution

The fourth proportional to 352,174.64, 485,705.40 and 231,223.28 is: 318,894.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,174.64 : 485,705.40 = 231,223.28 : x
  2. Step 2: Convert to fraction form
    352,174.64/485,705.40 = 231,223.28/x
  3. Step 3: Cross multiply
    352,174.64x = 485,705.40 × 231,223.28
  4. Step 4: Simplify right side
    352,174.64x = 112,306,395,701.71
  5. Step 5: Solve for x
    x = 112,306,395,701.71/352,174.64
  6. Step 6: Final answer
    x = 318,894.05

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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.