Home / 205,725.20-309,048.60-197,328.40

Finding the Fourth Proportional to 205,725.20, 309,048.60 and 197,328.40

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Solution

The fourth proportional to 205,725.20, 309,048.60 and 197,328.40 is: 296,434.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,725.20 : 309,048.60 = 197,328.40 : x
  2. Step 2: Convert to fraction form
    205,725.20/309,048.60 = 197,328.40/x
  3. Step 3: Cross multiply
    205,725.20x = 309,048.60 × 197,328.40
  4. Step 4: Simplify right side
    205,725.20x = 60,984,065,760.24
  5. Step 5: Solve for x
    x = 60,984,065,760.24/205,725.20
  6. Step 6: Final answer
    x = 296,434.59

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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.