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Finding the Fourth Proportional to 400,885, 601,376.94 and 131,006.76

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Solution

The fourth proportional to 400,885, 601,376.94 and 131,006.76 is: 196,526.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,885 : 601,376.94 = 131,006.76 : x
  2. Step 2: Convert to fraction form
    400,885/601,376.94 = 131,006.76/x
  3. Step 3: Cross multiply
    400,885x = 601,376.94 × 131,006.76
  4. Step 4: Simplify right side
    400,885x = 78,784,444,448.11
  5. Step 5: Solve for x
    x = 78,784,444,448.11/400,885
  6. Step 6: Final answer
    x = 196,526.30

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1.5x scale

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.