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Finding the Fourth Proportional to 603,428.12, 905,142.18 and 154,149.97

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Solution

The fourth proportional to 603,428.12, 905,142.18 and 154,149.97 is: 231,224.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    603,428.12 : 905,142.18 = 154,149.97 : x
  2. Step 2: Convert to fraction form
    603,428.12/905,142.18 = 154,149.97/x
  3. Step 3: Cross multiply
    603,428.12x = 905,142.18 × 154,149.97
  4. Step 4: Simplify right side
    603,428.12x = 139,527,639,892.74
  5. Step 5: Solve for x
    x = 139,527,639,892.74/603,428.12
  6. Step 6: Final answer
    x = 231,224.96

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Similar ratio
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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.