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Finding the Fourth Proportional to 229,863.92, 317,138.37 and 139,190.90

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Solution

The fourth proportional to 229,863.92, 317,138.37 and 139,190.90 is: 192,038.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    229,863.92 : 317,138.37 = 139,190.90 : x
  2. Step 2: Convert to fraction form
    229,863.92/317,138.37 = 139,190.90/x
  3. Step 3: Cross multiply
    229,863.92x = 317,138.37 × 139,190.90
  4. Step 4: Simplify right side
    229,863.92x = 44,142,775,144.83
  5. Step 5: Solve for x
    x = 44,142,775,144.83/229,863.92
  6. Step 6: Final answer
    x = 192,038.73

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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.