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Finding the Fourth Proportional to 404,709.05, 558,499.31 and 223,421.23

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Solution

The fourth proportional to 404,709.05, 558,499.31 and 223,421.23 is: 308,321.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,709.05 : 558,499.31 = 223,421.23 : x
  2. Step 2: Convert to fraction form
    404,709.05/558,499.31 = 223,421.23/x
  3. Step 3: Cross multiply
    404,709.05x = 558,499.31 × 223,421.23
  4. Step 4: Simplify right side
    404,709.05x = 124,780,601,956.66
  5. Step 5: Solve for x
    x = 124,780,601,956.66/404,709.05
  6. Step 6: Final answer
    x = 308,321.75

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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.