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Finding the Fourth Proportional to 251,501.68, 377,172.50 and 82,990.61

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Solution

The fourth proportional to 251,501.68, 377,172.50 and 82,990.61 is: 124,459.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,501.68 : 377,172.50 = 82,990.61 : x
  2. Step 2: Convert to fraction form
    251,501.68/377,172.50 = 82,990.61/x
  3. Step 3: Cross multiply
    251,501.68x = 377,172.50 × 82,990.61
  4. Step 4: Simplify right side
    251,501.68x = 31,301,775,435.27
  5. Step 5: Solve for x
    x = 31,301,775,435.27/251,501.68
  6. Step 6: Final answer
    x = 124,459.51

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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.