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Finding the Fourth Proportional to 400,276.40, 600,487.36 and 189,912.36

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Solution

The fourth proportional to 400,276.40, 600,487.36 and 189,912.36 is: 284,903.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,276.40 : 600,487.36 = 189,912.36 : x
  2. Step 2: Convert to fraction form
    400,276.40/600,487.36 = 189,912.36/x
  3. Step 3: Cross multiply
    400,276.40x = 600,487.36 × 189,912.36
  4. Step 4: Simplify right side
    400,276.40x = 114,039,971,687.77
  5. Step 5: Solve for x
    x = 114,039,971,687.77/400,276.40
  6. Step 6: Final answer
    x = 284,903.06

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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.