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Finding the Fourth Proportional to 404,502.36, 558,188.12 and 223,215.72

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Solution

The fourth proportional to 404,502.36, 558,188.12 and 223,215.72 is: 308,023.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,502.36 : 558,188.12 = 223,215.72 : x
  2. Step 2: Convert to fraction form
    404,502.36/558,188.12 = 223,215.72/x
  3. Step 3: Cross multiply
    404,502.36x = 558,188.12 × 223,215.72
  4. Step 4: Simplify right side
    404,502.36x = 124,596,363,101.25
  5. Step 5: Solve for x
    x = 124,596,363,101.25/404,502.36
  6. Step 6: Final answer
    x = 308,023.82

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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.