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Finding the Fourth Proportional to 661,299.60, 992,230.20 and 361,429.86

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Solution

The fourth proportional to 661,299.60, 992,230.20 and 361,429.86 is: 542,298.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,299.60 : 992,230.20 = 361,429.86 : x
  2. Step 2: Convert to fraction form
    661,299.60/992,230.20 = 361,429.86/x
  3. Step 3: Cross multiply
    661,299.60x = 992,230.20 × 361,429.86
  4. Step 4: Simplify right side
    661,299.60x = 358,621,622,273.77
  5. Step 5: Solve for x
    x = 358,621,622,273.77/661,299.60
  6. Step 6: Final answer
    x = 542,298.26

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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.