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Finding the Fourth Proportional to 245,722.75, 368,672.82 and 85,822.23

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Solution

The fourth proportional to 245,722.75, 368,672.82 and 85,822.23 is: 128,764.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,722.75 : 368,672.82 = 85,822.23 : x
  2. Step 2: Convert to fraction form
    245,722.75/368,672.82 = 85,822.23/x
  3. Step 3: Cross multiply
    245,722.75x = 368,672.82 × 85,822.23
  4. Step 4: Simplify right side
    245,722.75x = 31,640,323,552.79
  5. Step 5: Solve for x
    x = 31,640,323,552.79/245,722.75
  6. Step 6: Final answer
    x = 128,764.32

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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.