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Finding the Fourth Proportional to 192,235.60, 288,353.36 and 139,977.64

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Solution

The fourth proportional to 192,235.60, 288,353.36 and 139,977.64 is: 209,966.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,235.60 : 288,353.36 = 139,977.64 : x
  2. Step 2: Convert to fraction form
    192,235.60/288,353.36 = 139,977.64/x
  3. Step 3: Cross multiply
    192,235.60x = 288,353.36 × 139,977.64
  4. Step 4: Simplify right side
    192,235.60x = 40,363,022,818.87
  5. Step 5: Solve for x
    x = 40,363,022,818.87/192,235.60
  6. Step 6: Final answer
    x = 209,966.43

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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.