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Finding the Fourth Proportional to 420,596.88, 580,631.81 and 259,540.62

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Solution

The fourth proportional to 420,596.88, 580,631.81 and 259,540.62 is: 358,294.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,596.88 : 580,631.81 = 259,540.62 : x
  2. Step 2: Convert to fraction form
    420,596.88/580,631.81 = 259,540.62/x
  3. Step 3: Cross multiply
    420,596.88x = 580,631.81 × 259,540.62
  4. Step 4: Simplify right side
    420,596.88x = 150,697,538,661.42
  5. Step 5: Solve for x
    x = 150,697,538,661.42/420,596.88
  6. Step 6: Final answer
    x = 358,294.48

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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.