Home / 420,400.96-580,165.62-229,426.60

Finding the Fourth Proportional to 420,400.96, 580,165.62 and 229,426.60

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Solution

The fourth proportional to 420,400.96, 580,165.62 and 229,426.60 is: 316,615.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,400.96 : 580,165.62 = 229,426.60 : x
  2. Step 2: Convert to fraction form
    420,400.96/580,165.62 = 229,426.60/x
  3. Step 3: Cross multiply
    420,400.96x = 580,165.62 × 229,426.60
  4. Step 4: Simplify right side
    420,400.96x = 133,105,425,633.49
  5. Step 5: Solve for x
    x = 133,105,425,633.49/420,400.96
  6. Step 6: Final answer
    x = 316,615.42

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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.