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Finding the Fourth Proportional to 272,333.20, 407,527.80 and 172,541.20

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Solution

The fourth proportional to 272,333.20, 407,527.80 and 172,541.20 is: 258,195.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,333.20 : 407,527.80 = 172,541.20 : x
  2. Step 2: Convert to fraction form
    272,333.20/407,527.80 = 172,541.20/x
  3. Step 3: Cross multiply
    272,333.20x = 407,527.80 × 172,541.20
  4. Step 4: Simplify right side
    272,333.20x = 70,315,335,645.36
  5. Step 5: Solve for x
    x = 70,315,335,645.36/272,333.20
  6. Step 6: Final answer
    x = 258,195.97

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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.