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Finding the Fourth Proportional to 228,601.95, 315,433.94 and 143,658.87

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Solution

The fourth proportional to 228,601.95, 315,433.94 and 143,658.87 is: 198,226.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,601.95 : 315,433.94 = 143,658.87 : x
  2. Step 2: Convert to fraction form
    228,601.95/315,433.94 = 143,658.87/x
  3. Step 3: Cross multiply
    228,601.95x = 315,433.94 × 143,658.87
  4. Step 4: Simplify right side
    228,601.95x = 45,314,883,380.05
  5. Step 5: Solve for x
    x = 45,314,883,380.05/228,601.95
  6. Step 6: Final answer
    x = 198,226.15

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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.