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Finding the Fourth Proportional to 272,004.40, 408,006.60 and 172,277.20

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Solution

The fourth proportional to 272,004.40, 408,006.60 and 172,277.20 is: 258,415.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,004.40 : 408,006.60 = 172,277.20 : x
  2. Step 2: Convert to fraction form
    272,004.40/408,006.60 = 172,277.20/x
  3. Step 3: Cross multiply
    272,004.40x = 408,006.60 × 172,277.20
  4. Step 4: Simplify right side
    272,004.40x = 70,290,234,629.52
  5. Step 5: Solve for x
    x = 70,290,234,629.52/272,004.40
  6. Step 6: Final answer
    x = 258,415.80

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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.