Home / 386,912.64-533,963.13-217,146.75

Finding the Fourth Proportional to 386,912.64, 533,963.13 and 217,146.75

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Solution

The fourth proportional to 386,912.64, 533,963.13 and 217,146.75 is: 299,675.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,912.64 : 533,963.13 = 217,146.75 : x
  2. Step 2: Convert to fraction form
    386,912.64/533,963.13 = 217,146.75/x
  3. Step 3: Cross multiply
    386,912.64x = 533,963.13 × 217,146.75
  4. Step 4: Simplify right side
    386,912.64x = 115,948,358,299.33
  5. Step 5: Solve for x
    x = 115,948,358,299.33/386,912.64
  6. Step 6: Final answer
    x = 299,675.81

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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.