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Finding the Fourth Proportional to 228,600.95, 315,432.56 and 143,657.87

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Solution

The fourth proportional to 228,600.95, 315,432.56 and 143,657.87 is: 198,224.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,600.95 : 315,432.56 = 143,657.87 : x
  2. Step 2: Convert to fraction form
    228,600.95/315,432.56 = 143,657.87/x
  3. Step 3: Cross multiply
    228,600.95x = 315,432.56 × 143,657.87
  4. Step 4: Simplify right side
    228,600.95x = 45,314,368,480.23
  5. Step 5: Solve for x
    x = 45,314,368,480.23/228,600.95
  6. Step 6: Final answer
    x = 198,224.76

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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.