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Finding the Fourth Proportional to 404,719.81, 558,510.21 and 223,432

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Solution

The fourth proportional to 404,719.81, 558,510.21 and 223,432 is: 308,334.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,719.81 : 558,510.21 = 223,432 : x
  2. Step 2: Convert to fraction form
    404,719.81/558,510.21 = 223,432/x
  3. Step 3: Cross multiply
    404,719.81x = 558,510.21 × 223,432
  4. Step 4: Simplify right side
    404,719.81x = 124,789,053,240.72
  5. Step 5: Solve for x
    x = 124,789,053,240.72/404,719.81
  6. Step 6: Final answer
    x = 308,334.43

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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.