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Finding the Fourth Proportional to 342,846.97, 512,185.54 and 221,918.83

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Solution

The fourth proportional to 342,846.97, 512,185.54 and 221,918.83 is: 331,528.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    342,846.97 : 512,185.54 = 221,918.83 : x
  2. Step 2: Convert to fraction form
    342,846.97/512,185.54 = 221,918.83/x
  3. Step 3: Cross multiply
    342,846.97x = 512,185.54 × 221,918.83
  4. Step 4: Simplify right side
    342,846.97x = 113,663,615,779.72
  5. Step 5: Solve for x
    x = 113,663,615,779.72/342,846.97
  6. Step 6: Final answer
    x = 331,528.72

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.