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Finding the Fourth Proportional to 352,422.28, 485,672.34 and 345,945.16

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Solution

The fourth proportional to 352,422.28, 485,672.34 and 345,945.16 is: 476,746.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,422.28 : 485,672.34 = 345,945.16 : x
  2. Step 2: Convert to fraction form
    352,422.28/485,672.34 = 345,945.16/x
  3. Step 3: Cross multiply
    352,422.28x = 485,672.34 × 345,945.16
  4. Step 4: Simplify right side
    352,422.28x = 168,015,995,368.87
  5. Step 5: Solve for x
    x = 168,015,995,368.87/352,422.28
  6. Step 6: Final answer
    x = 476,746.24

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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.