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Finding the Fourth Proportional to 213,627.67, 320,438.67 and 63,869.20

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Solution

The fourth proportional to 213,627.67, 320,438.67 and 63,869.20 is: 95,802.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,627.67 : 320,438.67 = 63,869.20 : x
  2. Step 2: Convert to fraction form
    213,627.67/320,438.67 = 63,869.20/x
  3. Step 3: Cross multiply
    213,627.67x = 320,438.67 × 63,869.20
  4. Step 4: Simplify right side
    213,627.67x = 20,466,161,501.96
  5. Step 5: Solve for x
    x = 20,466,161,501.96/213,627.67
  6. Step 6: Final answer
    x = 95,802.95

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.