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Finding the Fourth Proportional to 404,377.89, 558,043.35 and 223,089.76

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Solution

The fourth proportional to 404,377.89, 558,043.35 and 223,089.76 is: 307,864.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,377.89 : 558,043.35 = 223,089.76 : x
  2. Step 2: Convert to fraction form
    404,377.89/558,043.35 = 223,089.76/x
  3. Step 3: Cross multiply
    404,377.89x = 558,043.35 × 223,089.76
  4. Step 4: Simplify right side
    404,377.89x = 124,493,755,155.26
  5. Step 5: Solve for x
    x = 124,493,755,155.26/404,377.89
  6. Step 6: Final answer
    x = 307,864.89

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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.