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Finding the Fourth Proportional to 299,151.60, 411,989.40 and 292,619.76

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Solution

The fourth proportional to 299,151.60, 411,989.40 and 292,619.76 is: 402,993.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    299,151.60 : 411,989.40 = 292,619.76 : x
  2. Step 2: Convert to fraction form
    299,151.60/411,989.40 = 292,619.76/x
  3. Step 3: Cross multiply
    299,151.60x = 411,989.40 × 292,619.76
  4. Step 4: Simplify right side
    299,151.60x = 120,556,239,350.54
  5. Step 5: Solve for x
    x = 120,556,239,350.54/299,151.60
  6. Step 6: Final answer
    x = 402,993.80

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.