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Finding the Fourth Proportional to 388,989.73, 583,344.32 and 164,367.57

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Solution

The fourth proportional to 388,989.73, 583,344.32 and 164,367.57 is: 246,492.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,989.73 : 583,344.32 = 164,367.57 : x
  2. Step 2: Convert to fraction form
    388,989.73/583,344.32 = 164,367.57/x
  3. Step 3: Cross multiply
    388,989.73x = 583,344.32 × 164,367.57
  4. Step 4: Simplify right side
    388,989.73x = 95,882,890,000.67
  5. Step 5: Solve for x
    x = 95,882,890,000.67/388,989.73
  6. Step 6: Final answer
    x = 246,492.09

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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.