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Finding the Fourth Proportional to 228,305.70, 315,025.07 and 143,362.62

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Solution

The fourth proportional to 228,305.70, 315,025.07 and 143,362.62 is: 197,817.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,305.70 : 315,025.07 = 143,362.62 : x
  2. Step 2: Convert to fraction form
    228,305.70/315,025.07 = 143,362.62/x
  3. Step 3: Cross multiply
    228,305.70x = 315,025.07 × 143,362.62
  4. Step 4: Simplify right side
    228,305.70x = 45,162,818,684.07
  5. Step 5: Solve for x
    x = 45,162,818,684.07/228,305.70
  6. Step 6: Final answer
    x = 197,817.31

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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.