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Finding the Fourth Proportional to 166,989, 250,498.08 and 42,330

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Solution

The fourth proportional to 166,989, 250,498.08 and 42,330 is: 63,498.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    166,989 : 250,498.08 = 42,330 : x
  2. Step 2: Convert to fraction form
    166,989/250,498.08 = 42,330/x
  3. Step 3: Cross multiply
    166,989x = 250,498.08 × 42,330
  4. Step 4: Simplify right side
    166,989x = 10,603,583,726.40
  5. Step 5: Solve for x
    x = 10,603,583,726.40/166,989
  6. Step 6: Final answer
    x = 63,498.70

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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.