Home / 252,389.34-378,657.05-81,607.41

Finding the Fourth Proportional to 252,389.34, 378,657.05 and 81,607.41

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Solution

The fourth proportional to 252,389.34, 378,657.05 and 81,607.41 is: 122,434.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    252,389.34 : 378,657.05 = 81,607.41 : x
  2. Step 2: Convert to fraction form
    252,389.34/378,657.05 = 81,607.41/x
  3. Step 3: Cross multiply
    252,389.34x = 378,657.05 × 81,607.41
  4. Step 4: Simplify right side
    252,389.34x = 30,901,220,720.70
  5. Step 5: Solve for x
    x = 30,901,220,720.70/252,389.34
  6. Step 6: Final answer
    x = 122,434.73

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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.