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Finding the Fourth Proportional to 272,005.10, 407,086.05 and 272,005.10

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Solution

The fourth proportional to 272,005.10, 407,086.05 and 272,005.10 is: 407,086.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,005.10 : 407,086.05 = 272,005.10 : x
  2. Step 2: Convert to fraction form
    272,005.10/407,086.05 = 272,005.10/x
  3. Step 3: Cross multiply
    272,005.10x = 407,086.05 × 272,005.10
  4. Step 4: Simplify right side
    272,005.10x = 110,729,481,738.86
  5. Step 5: Solve for x
    x = 110,729,481,738.86/272,005.10
  6. Step 6: Final answer
    x = 407,086.05

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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.