Home / 306,279.33-459,440.86-81,638.58

Finding the Fourth Proportional to 306,279.33, 459,440.86 and 81,638.58

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Solution

The fourth proportional to 306,279.33, 459,440.86 and 81,638.58 is: 122,463.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    306,279.33 : 459,440.86 = 81,638.58 : x
  2. Step 2: Convert to fraction form
    306,279.33/459,440.86 = 81,638.58/x
  3. Step 3: Cross multiply
    306,279.33x = 459,440.86 × 81,638.58
  4. Step 4: Simplify right side
    306,279.33x = 37,508,101,076.26
  5. Step 5: Solve for x
    x = 37,508,101,076.26/306,279.33
  6. Step 6: Final answer
    x = 122,463.71

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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.