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Finding the Fourth Proportional to 272,350.40, 408,064.80 and 131,806.40

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Solution

The fourth proportional to 272,350.40, 408,064.80 and 131,806.40 is: 197,486.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,350.40 : 408,064.80 = 131,806.40 : x
  2. Step 2: Convert to fraction form
    272,350.40/408,064.80 = 131,806.40/x
  3. Step 3: Cross multiply
    272,350.40x = 408,064.80 × 131,806.40
  4. Step 4: Simplify right side
    272,350.40x = 53,785,552,254.72
  5. Step 5: Solve for x
    x = 53,785,552,254.72/272,350.40
  6. Step 6: Final answer
    x = 197,486.59

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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.