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Finding the Fourth Proportional to 404,398.20, 558,064.20 and 223,117.80

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Solution

The fourth proportional to 404,398.20, 558,064.20 and 223,117.80 is: 307,899.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,398.20 : 558,064.20 = 223,117.80 : x
  2. Step 2: Convert to fraction form
    404,398.20/558,064.20 = 223,117.80/x
  3. Step 3: Cross multiply
    404,398.20x = 558,064.20 × 223,117.80
  4. Step 4: Simplify right side
    404,398.20x = 124,514,056,562.76
  5. Step 5: Solve for x
    x = 124,514,056,562.76/404,398.20
  6. Step 6: Final answer
    x = 307,899.63

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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.