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Finding the Fourth Proportional to 213,617.67, 320,423.67 and 63,859.20

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Solution

The fourth proportional to 213,617.67, 320,423.67 and 63,859.20 is: 95,787.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,617.67 : 320,423.67 = 63,859.20 : x
  2. Step 2: Convert to fraction form
    213,617.67/320,423.67 = 63,859.20/x
  3. Step 3: Cross multiply
    213,617.67x = 320,423.67 × 63,859.20
  4. Step 4: Simplify right side
    213,617.67x = 20,461,999,227.26
  5. Step 5: Solve for x
    x = 20,461,999,227.26/213,617.67
  6. Step 6: Final answer
    x = 95,787.95

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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.