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Finding the Fourth Proportional to 220,699, 331,049.58 and 54,487

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Solution

The fourth proportional to 220,699, 331,049.58 and 54,487 is: 81,730.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,699 : 331,049.58 = 54,487 : x
  2. Step 2: Convert to fraction form
    220,699/331,049.58 = 54,487/x
  3. Step 3: Cross multiply
    220,699x = 331,049.58 × 54,487
  4. Step 4: Simplify right side
    220,699x = 18,037,898,465.46
  5. Step 5: Solve for x
    x = 18,037,898,465.46/220,699
  6. Step 6: Final answer
    x = 81,730.77

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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.