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Finding the Fourth Proportional to 272,655.10, 408,982.65 and 73,006.30

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Solution

The fourth proportional to 272,655.10, 408,982.65 and 73,006.30 is: 109,509.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,655.10 : 408,982.65 = 73,006.30 : x
  2. Step 2: Convert to fraction form
    272,655.10/408,982.65 = 73,006.30/x
  3. Step 3: Cross multiply
    272,655.10x = 408,982.65 × 73,006.30
  4. Step 4: Simplify right side
    272,655.10x = 29,858,310,040.70
  5. Step 5: Solve for x
    x = 29,858,310,040.70/272,655.10
  6. Step 6: Final answer
    x = 109,509.45

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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.