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Finding the Fourth Proportional to 237,280.80, 355,921.20 and 79,456.80

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Solution

The fourth proportional to 237,280.80, 355,921.20 and 79,456.80 is: 119,185.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    237,280.80 : 355,921.20 = 79,456.80 : x
  2. Step 2: Convert to fraction form
    237,280.80/355,921.20 = 79,456.80/x
  3. Step 3: Cross multiply
    237,280.80x = 355,921.20 × 79,456.80
  4. Step 4: Simplify right side
    237,280.80x = 28,280,359,604.16
  5. Step 5: Solve for x
    x = 28,280,359,604.16/237,280.80
  6. Step 6: Final answer
    x = 119,185.20

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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.