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Finding the Fourth Proportional to 404,703.20, 558,487.36 and 223,415.20

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Solution

The fourth proportional to 404,703.20, 558,487.36 and 223,415.20 is: 308,311.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,703.20 : 558,487.36 = 223,415.20 : x
  2. Step 2: Convert to fraction form
    404,703.20/558,487.36 = 223,415.20/x
  3. Step 3: Cross multiply
    404,703.20x = 558,487.36 × 223,415.20
  4. Step 4: Simplify right side
    404,703.20x = 124,774,565,231.87
  5. Step 5: Solve for x
    x = 124,774,565,231.87/404,703.20
  6. Step 6: Final answer
    x = 308,311.29

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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.