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Finding the Fourth Proportional to 272,508, 408,785.04 and 75,516

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Solution

The fourth proportional to 272,508, 408,785.04 and 75,516 is: 113,280.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,508 : 408,785.04 = 75,516 : x
  2. Step 2: Convert to fraction form
    272,508/408,785.04 = 75,516/x
  3. Step 3: Cross multiply
    272,508x = 408,785.04 × 75,516
  4. Step 4: Simplify right side
    272,508x = 30,869,811,080.64
  5. Step 5: Solve for x
    x = 30,869,811,080.64/272,508
  6. Step 6: Final answer
    x = 113,280.38

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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.