Home / 405,238.12-559,239.78-223,961.80

Finding the Fourth Proportional to 405,238.12, 559,239.78 and 223,961.80

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Solution

The fourth proportional to 405,238.12, 559,239.78 and 223,961.80 is: 309,073.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    405,238.12 : 559,239.78 = 223,961.80 : x
  2. Step 2: Convert to fraction form
    405,238.12/559,239.78 = 223,961.80/x
  3. Step 3: Cross multiply
    405,238.12x = 559,239.78 × 223,961.80
  4. Step 4: Simplify right side
    405,238.12x = 125,248,347,760.40
  5. Step 5: Solve for x
    x = 125,248,347,760.40/405,238.12
  6. Step 6: Final answer
    x = 309,073.46

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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.