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Finding the Fourth Proportional to 228,791.83, 315,625.93 and 143,955.67

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Solution

The fourth proportional to 228,791.83, 315,625.93 and 143,955.67 is: 198,591.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,791.83 : 315,625.93 = 143,955.67 : x
  2. Step 2: Convert to fraction form
    228,791.83/315,625.93 = 143,955.67/x
  3. Step 3: Cross multiply
    228,791.83x = 315,625.93 × 143,955.67
  4. Step 4: Simplify right side
    228,791.83x = 45,436,142,222.52
  5. Step 5: Solve for x
    x = 45,436,142,222.52/228,791.83
  6. Step 6: Final answer
    x = 198,591.63

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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.