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Finding the Fourth Proportional to 272,092.16, 408,180.32 and 138,900.16

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Solution

The fourth proportional to 272,092.16, 408,180.32 and 138,900.16 is: 208,371.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,092.16 : 408,180.32 = 138,900.16 : x
  2. Step 2: Convert to fraction form
    272,092.16/408,180.32 = 138,900.16/x
  3. Step 3: Cross multiply
    272,092.16x = 408,180.32 × 138,900.16
  4. Step 4: Simplify right side
    272,092.16x = 56,696,311,756.85
  5. Step 5: Solve for x
    x = 56,696,311,756.85/272,092.16
  6. Step 6: Final answer
    x = 208,371.72

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1.5x scale

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.