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Finding the Fourth Proportional to 404,649.12, 558,415.88 and 223,361.12

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Solution

The fourth proportional to 404,649.12, 558,415.88 and 223,361.12 is: 308,238.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,649.12 : 558,415.88 = 223,361.12 : x
  2. Step 2: Convert to fraction form
    404,649.12/558,415.88 = 223,361.12/x
  3. Step 3: Cross multiply
    404,649.12x = 558,415.88 × 223,361.12
  4. Step 4: Simplify right side
    404,649.12x = 124,728,396,382.59
  5. Step 5: Solve for x
    x = 124,728,396,382.59/404,649.12
  6. Step 6: Final answer
    x = 308,238.40

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1.5x scale

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.