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Finding the Fourth Proportional to 352,422.78, 485,673.03 and 345,945.66

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Solution

The fourth proportional to 352,422.78, 485,673.03 and 345,945.66 is: 476,746.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,422.78 : 485,673.03 = 345,945.66 : x
  2. Step 2: Convert to fraction form
    352,422.78/485,673.03 = 345,945.66/x
  3. Step 3: Cross multiply
    352,422.78x = 485,673.03 × 345,945.66
  4. Step 4: Simplify right side
    352,422.78x = 168,016,476,907.55
  5. Step 5: Solve for x
    x = 168,016,476,907.55/352,422.78
  6. Step 6: Final answer
    x = 476,746.93

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1.5x scale

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.