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Finding the Fourth Proportional to 259,435, 389,152.62 and 62,443

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Solution

The fourth proportional to 259,435, 389,152.62 and 62,443 is: 93,664.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,435 : 389,152.62 = 62,443 : x
  2. Step 2: Convert to fraction form
    259,435/389,152.62 = 62,443/x
  3. Step 3: Cross multiply
    259,435x = 389,152.62 × 62,443
  4. Step 4: Simplify right side
    259,435x = 24,299,857,050.66
  5. Step 5: Solve for x
    x = 24,299,857,050.66/259,435
  6. Step 6: Final answer
    x = 93,664.53

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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.