Home / 386,911.64-533,961.75-217,145.75

Finding the Fourth Proportional to 386,911.64, 533,961.75 and 217,145.75

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Solution

The fourth proportional to 386,911.64, 533,961.75 and 217,145.75 is: 299,674.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,911.64 : 533,961.75 = 217,145.75 : x
  2. Step 2: Convert to fraction form
    386,911.64/533,961.75 = 217,145.75/x
  3. Step 3: Cross multiply
    386,911.64x = 533,961.75 × 217,145.75
  4. Step 4: Simplify right side
    386,911.64x = 115,947,524,675.06
  5. Step 5: Solve for x
    x = 115,947,524,675.06/386,911.64
  6. Step 6: Final answer
    x = 299,674.43

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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.