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Finding the Fourth Proportional to 641,496.61, 962,458.62 and 215,074.63

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Solution

The fourth proportional to 641,496.61, 962,458.62 and 215,074.63 is: 322,683.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,496.61 : 962,458.62 = 215,074.63 : x
  2. Step 2: Convert to fraction form
    641,496.61/962,458.62 = 215,074.63/x
  3. Step 3: Cross multiply
    641,496.61x = 962,458.62 × 215,074.63
  4. Step 4: Simplify right side
    641,496.61x = 207,000,431,586.81
  5. Step 5: Solve for x
    x = 207,000,431,586.81/641,496.61
  6. Step 6: Final answer
    x = 322,683.59

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.