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Finding the Fourth Proportional to 470,286.88, 649,000.64 and 255,428.96

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Solution

The fourth proportional to 470,286.88, 649,000.64 and 255,428.96 is: 352,494.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    470,286.88 : 649,000.64 = 255,428.96 : x
  2. Step 2: Convert to fraction form
    470,286.88/649,000.64 = 255,428.96/x
  3. Step 3: Cross multiply
    470,286.88x = 649,000.64 × 255,428.96
  4. Step 4: Simplify right side
    470,286.88x = 165,773,558,514.53
  5. Step 5: Solve for x
    x = 165,773,558,514.53/470,286.88
  6. Step 6: Final answer
    x = 352,494.54

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.