Home / 405,023.21-558,921.20-223,731.24

Finding the Fourth Proportional to 405,023.21, 558,921.20 and 223,731.24

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Solution

The fourth proportional to 405,023.21, 558,921.20 and 223,731.24 is: 308,743.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    405,023.21 : 558,921.20 = 223,731.24 : x
  2. Step 2: Convert to fraction form
    405,023.21/558,921.20 = 223,731.24/x
  3. Step 3: Cross multiply
    405,023.21x = 558,921.20 × 223,731.24
  4. Step 4: Simplify right side
    405,023.21x = 125,048,129,923.68
  5. Step 5: Solve for x
    x = 125,048,129,923.68/405,023.21
  6. Step 6: Final answer
    x = 308,743.12

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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.