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Finding the Fourth Proportional to 665,898.68, 998,857.23 and 216,621.89

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Solution

The fourth proportional to 665,898.68, 998,857.23 and 216,621.89 is: 324,935.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,898.68 : 998,857.23 = 216,621.89 : x
  2. Step 2: Convert to fraction form
    665,898.68/998,857.23 = 216,621.89/x
  3. Step 3: Cross multiply
    665,898.68x = 998,857.23 × 216,621.89
  4. Step 4: Simplify right side
    665,898.68x = 216,374,341,002.77
  5. Step 5: Solve for x
    x = 216,374,341,002.77/665,898.68
  6. Step 6: Final answer
    x = 324,935.83

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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.