Home / 386,928.74-533,961.65-217,162.87

Finding the Fourth Proportional to 386,928.74, 533,961.65 and 217,162.87

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Solution

The fourth proportional to 386,928.74, 533,961.65 and 217,162.87 is: 299,684.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,928.74 : 533,961.65 = 217,162.87 : x
  2. Step 2: Convert to fraction form
    386,928.74/533,961.65 = 217,162.87/x
  3. Step 3: Cross multiply
    386,928.74x = 533,961.65 × 217,162.87
  4. Step 4: Simplify right side
    386,928.74x = 115,956,643,591.94
  5. Step 5: Solve for x
    x = 115,956,643,591.94/386,928.74
  6. Step 6: Final answer
    x = 299,684.75

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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.