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Finding the Fourth Proportional to 272,354.80, 407,725.80 and 202,543.60

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Solution

The fourth proportional to 272,354.80, 407,725.80 and 202,543.60 is: 303,215.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,354.80 : 407,725.80 = 202,543.60 : x
  2. Step 2: Convert to fraction form
    272,354.80/407,725.80 = 202,543.60/x
  3. Step 3: Cross multiply
    272,354.80x = 407,725.80 × 202,543.60
  4. Step 4: Simplify right side
    272,354.80x = 82,582,251,344.88
  5. Step 5: Solve for x
    x = 82,582,251,344.88/272,354.80
  6. Step 6: Final answer
    x = 303,215.70

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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.