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Finding the Fourth Proportional to 404,935.90, 558,816.90 and 223,647.28

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Solution

The fourth proportional to 404,935.90, 558,816.90 and 223,647.28 is: 308,636.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,935.90 : 558,816.90 = 223,647.28 : x
  2. Step 2: Convert to fraction form
    404,935.90/558,816.90 = 223,647.28/x
  3. Step 3: Cross multiply
    404,935.90x = 558,816.90 × 223,647.28
  4. Step 4: Simplify right side
    404,935.90x = 124,977,879,703.03
  5. Step 5: Solve for x
    x = 124,977,879,703.03/404,935.90
  6. Step 6: Final answer
    x = 308,636.21

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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.