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Finding the Fourth Proportional to 413,841.40, 620,870.10 and 133,365.40

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Solution

The fourth proportional to 413,841.40, 620,870.10 and 133,365.40 is: 200,082.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    413,841.40 : 620,870.10 = 133,365.40 : x
  2. Step 2: Convert to fraction form
    413,841.40/620,870.10 = 133,365.40/x
  3. Step 3: Cross multiply
    413,841.40x = 620,870.10 × 133,365.40
  4. Step 4: Simplify right side
    413,841.40x = 82,802,589,234.54
  5. Step 5: Solve for x
    x = 82,802,589,234.54/413,841.40
  6. Step 6: Final answer
    x = 200,082.90

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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.