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Finding the Fourth Proportional to 436,557.56, 655,258.67 and 315,103.32

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Solution

The fourth proportional to 436,557.56, 655,258.67 and 315,103.32 is: 472,959.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    436,557.56 : 655,258.67 = 315,103.32 : x
  2. Step 2: Convert to fraction form
    436,557.56/655,258.67 = 315,103.32/x
  3. Step 3: Cross multiply
    436,557.56x = 655,258.67 × 315,103.32
  4. Step 4: Simplify right side
    436,557.56x = 206,474,182,525.75
  5. Step 5: Solve for x
    x = 206,474,182,525.75/436,557.56
  6. Step 6: Final answer
    x = 472,959.81

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.