Home / 386,865.18-533,912.31-217,099.98

Finding the Fourth Proportional to 386,865.18, 533,912.31 and 217,099.98

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Solution

The fourth proportional to 386,865.18, 533,912.31 and 217,099.98 is: 299,619.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,865.18 : 533,912.31 = 217,099.98 : x
  2. Step 2: Convert to fraction form
    386,865.18/533,912.31 = 217,099.98/x
  3. Step 3: Cross multiply
    386,865.18x = 533,912.31 × 217,099.98
  4. Step 4: Simplify right side
    386,865.18x = 115,912,351,822.75
  5. Step 5: Solve for x
    x = 115,912,351,822.75/386,865.18
  6. Step 6: Final answer
    x = 299,619.50

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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.