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Finding the Fourth Proportional to 228,305.95, 315,025.41 and 143,362.87

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Solution

The fourth proportional to 228,305.95, 315,025.41 and 143,362.87 is: 197,817.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,305.95 : 315,025.41 = 143,362.87 : x
  2. Step 2: Convert to fraction form
    228,305.95/315,025.41 = 143,362.87/x
  3. Step 3: Cross multiply
    228,305.95x = 315,025.41 × 143,362.87
  4. Step 4: Simplify right side
    228,305.95x = 45,162,946,900.53
  5. Step 5: Solve for x
    x = 45,162,946,900.53/228,305.95
  6. Step 6: Final answer
    x = 197,817.65

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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.