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Finding the Fourth Proportional to 251,489.95, 377,031.81 and 82,905.06

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Solution

The fourth proportional to 251,489.95, 377,031.81 and 82,905.06 is: 124,290.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,489.95 : 377,031.81 = 82,905.06 : x
  2. Step 2: Convert to fraction form
    251,489.95/377,031.81 = 82,905.06/x
  3. Step 3: Cross multiply
    251,489.95x = 377,031.81 × 82,905.06
  4. Step 4: Simplify right side
    251,489.95x = 31,257,842,944.80
  5. Step 5: Solve for x
    x = 31,257,842,944.80/251,489.95
  6. Step 6: Final answer
    x = 124,290.62

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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.