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Finding the Fourth Proportional to 228,004.70, 342,007.05 and 85,849.70

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Solution

The fourth proportional to 228,004.70, 342,007.05 and 85,849.70 is: 128,774.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,004.70 : 342,007.05 = 85,849.70 : x
  2. Step 2: Convert to fraction form
    228,004.70/342,007.05 = 85,849.70/x
  3. Step 3: Cross multiply
    228,004.70x = 342,007.05 × 85,849.70
  4. Step 4: Simplify right side
    228,004.70x = 29,361,202,640.39
  5. Step 5: Solve for x
    x = 29,361,202,640.39/228,004.70
  6. Step 6: Final answer
    x = 128,774.55

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.