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Finding the Fourth Proportional to 228,791.34, 315,625.24 and 143,955.18

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Solution

The fourth proportional to 228,791.34, 315,625.24 and 143,955.18 is: 198,590.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,791.34 : 315,625.24 = 143,955.18 : x
  2. Step 2: Convert to fraction form
    228,791.34/315,625.24 = 143,955.18/x
  3. Step 3: Cross multiply
    228,791.34x = 315,625.24 × 143,955.18
  4. Step 4: Simplify right side
    228,791.34x = 45,435,888,236.74
  5. Step 5: Solve for x
    x = 45,435,888,236.74/228,791.34
  6. Step 6: Final answer
    x = 198,590.94

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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.