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Finding the Fourth Proportional to 272,056.80, 408,085.20 and 197,407.20

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Solution

The fourth proportional to 272,056.80, 408,085.20 and 197,407.20 is: 296,110.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,056.80 : 408,085.20 = 197,407.20 : x
  2. Step 2: Convert to fraction form
    272,056.80/408,085.20 = 197,407.20/x
  3. Step 3: Cross multiply
    272,056.80x = 408,085.20 × 197,407.20
  4. Step 4: Simplify right side
    272,056.80x = 80,558,956,693.44
  5. Step 5: Solve for x
    x = 80,558,956,693.44/272,056.80
  6. Step 6: Final answer
    x = 296,110.80

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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.