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Finding the Fourth Proportional to 213,426.60, 320,156.10 and 63,655.17

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Solution

The fourth proportional to 213,426.60, 320,156.10 and 63,655.17 is: 95,487.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,426.60 : 320,156.10 = 63,655.17 : x
  2. Step 2: Convert to fraction form
    213,426.60/320,156.10 = 63,655.17/x
  3. Step 3: Cross multiply
    213,426.60x = 320,156.10 × 63,655.17
  4. Step 4: Simplify right side
    213,426.60x = 20,379,590,972.04
  5. Step 5: Solve for x
    x = 20,379,590,972.04/213,426.60
  6. Step 6: Final answer
    x = 95,487.59

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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.