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Finding the Fourth Proportional to 404,639.49, 558,402.53 and 223,351.47

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Solution

The fourth proportional to 404,639.49, 558,402.53 and 223,351.47 is: 308,225.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,639.49 : 558,402.53 = 223,351.47 : x
  2. Step 2: Convert to fraction form
    404,639.49/558,402.53 = 223,351.47/x
  3. Step 3: Cross multiply
    404,639.49x = 558,402.53 × 223,351.47
  4. Step 4: Simplify right side
    404,639.49x = 124,720,022,192.95
  5. Step 5: Solve for x
    x = 124,720,022,192.95/404,639.49
  6. Step 6: Final answer
    x = 308,225.04

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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.