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Finding the Fourth Proportional to 404,465.30, 606,611.78 and 120,078.76

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Solution

The fourth proportional to 404,465.30, 606,611.78 and 120,078.76 is: 180,092.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,465.30 : 606,611.78 = 120,078.76 : x
  2. Step 2: Convert to fraction form
    404,465.30/606,611.78 = 120,078.76/x
  3. Step 3: Cross multiply
    404,465.30x = 606,611.78 × 120,078.76
  4. Step 4: Simplify right side
    404,465.30x = 72,841,190,343.79
  5. Step 5: Solve for x
    x = 72,841,190,343.79/404,465.30
  6. Step 6: Final answer
    x = 180,092.56

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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.