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Finding the Fourth Proportional to 228,274.57, 315,128.73 and 151,920.73

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Solution

The fourth proportional to 228,274.57, 315,128.73 and 151,920.73 is: 209,723.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,274.57 : 315,128.73 = 151,920.73 : x
  2. Step 2: Convert to fraction form
    228,274.57/315,128.73 = 151,920.73/x
  3. Step 3: Cross multiply
    228,274.57x = 315,128.73 × 151,920.73
  4. Step 4: Simplify right side
    228,274.57x = 47,874,586,705.57
  5. Step 5: Solve for x
    x = 47,874,586,705.57/228,274.57
  6. Step 6: Final answer
    x = 209,723.70

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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.