Home / 420,909.24-580,845.31-229,923.39

Finding the Fourth Proportional to 420,909.24, 580,845.31 and 229,923.39

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Solution

The fourth proportional to 420,909.24, 580,845.31 and 229,923.39 is: 317,289.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,909.24 : 580,845.31 = 229,923.39 : x
  2. Step 2: Convert to fraction form
    420,909.24/580,845.31 = 229,923.39/x
  3. Step 3: Cross multiply
    420,909.24x = 580,845.31 × 229,923.39
  4. Step 4: Simplify right side
    420,909.24x = 133,549,921,288.69
  5. Step 5: Solve for x
    x = 133,549,921,288.69/420,909.24
  6. Step 6: Final answer
    x = 317,289.12

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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.