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Finding the Fourth Proportional to 192,801.40, 288,683.70 and 139,924.60

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Solution

The fourth proportional to 192,801.40, 288,683.70 and 139,924.60 is: 209,510.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,801.40 : 288,683.70 = 139,924.60 : x
  2. Step 2: Convert to fraction form
    192,801.40/288,683.70 = 139,924.60/x
  3. Step 3: Cross multiply
    192,801.40x = 288,683.70 × 139,924.60
  4. Step 4: Simplify right side
    192,801.40x = 40,393,951,249.02
  5. Step 5: Solve for x
    x = 40,393,951,249.02/192,801.40
  6. Step 6: Final answer
    x = 209,510.67

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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.