Home / 386,928.77-533,961.71-217,162.90

Finding the Fourth Proportional to 386,928.77, 533,961.71 and 217,162.90

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Solution

The fourth proportional to 386,928.77, 533,961.71 and 217,162.90 is: 299,684.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,928.77 : 533,961.71 = 217,162.90 : x
  2. Step 2: Convert to fraction form
    386,928.77/533,961.71 = 217,162.90/x
  3. Step 3: Cross multiply
    386,928.77x = 533,961.71 × 217,162.90
  4. Step 4: Simplify right side
    386,928.77x = 115,956,673,432.56
  5. Step 5: Solve for x
    x = 115,956,673,432.56/386,928.77
  6. Step 6: Final answer
    x = 299,684.81

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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.