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Finding the Fourth Proportional to 298,930.90, 418,814.30 and 298,930.90

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Solution

The fourth proportional to 298,930.90, 418,814.30 and 298,930.90 is: 418,814.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    298,930.90 : 418,814.30 = 298,930.90 : x
  2. Step 2: Convert to fraction form
    298,930.90/418,814.30 = 298,930.90/x
  3. Step 3: Cross multiply
    298,930.90x = 418,814.30 × 298,930.90
  4. Step 4: Simplify right side
    298,930.90x = 125,196,535,631.87
  5. Step 5: Solve for x
    x = 125,196,535,631.87/298,930.90
  6. Step 6: Final answer
    x = 418,814.30

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.