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Finding the Fourth Proportional to 247,148.26, 341,079.32 and 139,728.31

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Solution

The fourth proportional to 247,148.26, 341,079.32 and 139,728.31 is: 192,833.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    247,148.26 : 341,079.32 = 139,728.31 : x
  2. Step 2: Convert to fraction form
    247,148.26/341,079.32 = 139,728.31/x
  3. Step 3: Cross multiply
    247,148.26x = 341,079.32 × 139,728.31
  4. Step 4: Simplify right side
    247,148.26x = 47,658,436,959.55
  5. Step 5: Solve for x
    x = 47,658,436,959.55/247,148.26
  6. Step 6: Final answer
    x = 192,833.39

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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.