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Finding the Fourth Proportional to 256,926.22, 385,407.80 and 79,410.16

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Solution

The fourth proportional to 256,926.22, 385,407.80 and 79,410.16 is: 119,120.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,926.22 : 385,407.80 = 79,410.16 : x
  2. Step 2: Convert to fraction form
    256,926.22/385,407.80 = 79,410.16/x
  3. Step 3: Cross multiply
    256,926.22x = 385,407.80 × 79,410.16
  4. Step 4: Simplify right side
    256,926.22x = 30,605,295,063.25
  5. Step 5: Solve for x
    x = 30,605,295,063.25/256,926.22
  6. Step 6: Final answer
    x = 119,120.95

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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.