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Finding the Fourth Proportional to 228,563.87, 315,419.05 and 133,136.15

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Solution

The fourth proportional to 228,563.87, 315,419.05 and 133,136.15 is: 183,728.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,563.87 : 315,419.05 = 133,136.15 : x
  2. Step 2: Convert to fraction form
    228,563.87/315,419.05 = 133,136.15/x
  3. Step 3: Cross multiply
    228,563.87x = 315,419.05 × 133,136.15
  4. Step 4: Simplify right side
    228,563.87x = 41,993,677,953.66
  5. Step 5: Solve for x
    x = 41,993,677,953.66/228,563.87
  6. Step 6: Final answer
    x = 183,728.42

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.