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Finding the Fourth Proportional to 342,099.22, 472,076.60 and 189,128.26

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Solution

The fourth proportional to 342,099.22, 472,076.60 and 189,128.26 is: 260,985.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    342,099.22 : 472,076.60 = 189,128.26 : x
  2. Step 2: Convert to fraction form
    342,099.22/472,076.60 = 189,128.26/x
  3. Step 3: Cross multiply
    342,099.22x = 472,076.60 × 189,128.26
  4. Step 4: Simplify right side
    342,099.22x = 89,283,025,943.79
  5. Step 5: Solve for x
    x = 89,283,025,943.79/342,099.22
  6. Step 6: Final answer
    x = 260,985.77

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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.