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Finding the Fourth Proportional to 192,384.80, 288,577.20 and 156,955.40

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Solution

The fourth proportional to 192,384.80, 288,577.20 and 156,955.40 is: 235,433.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,384.80 : 288,577.20 = 156,955.40 : x
  2. Step 2: Convert to fraction form
    192,384.80/288,577.20 = 156,955.40/x
  3. Step 3: Cross multiply
    192,384.80x = 288,577.20 × 156,955.40
  4. Step 4: Simplify right side
    192,384.80x = 45,293,749,856.88
  5. Step 5: Solve for x
    x = 45,293,749,856.88/192,384.80
  6. Step 6: Final answer
    x = 235,433.10

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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.