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Finding the Fourth Proportional to 404,403.92, 558,079.32 and 223,118

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Solution

The fourth proportional to 404,403.92, 558,079.32 and 223,118 is: 307,903.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,403.92 : 558,079.32 = 223,118 : x
  2. Step 2: Convert to fraction form
    404,403.92/558,079.32 = 223,118/x
  3. Step 3: Cross multiply
    404,403.92x = 558,079.32 × 223,118
  4. Step 4: Simplify right side
    404,403.92x = 124,517,541,719.76
  5. Step 5: Solve for x
    x = 124,517,541,719.76/404,403.92
  6. Step 6: Final answer
    x = 307,903.89

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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.