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Finding the Fourth Proportional to 404,428.88, 558,143.16 and 223,176.80

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Solution

The fourth proportional to 404,428.88, 558,143.16 and 223,176.80 is: 308,001.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,428.88 : 558,143.16 = 223,176.80 : x
  2. Step 2: Convert to fraction form
    404,428.88/558,143.16 = 223,176.80/x
  3. Step 3: Cross multiply
    404,428.88x = 558,143.16 × 223,176.80
  4. Step 4: Simplify right side
    404,428.88x = 124,564,604,390.69
  5. Step 5: Solve for x
    x = 124,564,604,390.69/404,428.88
  6. Step 6: Final answer
    x = 308,001.26

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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.