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Finding the Fourth Proportional to 256,555.15, 384,832.69 and 79,062.14

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Solution

The fourth proportional to 256,555.15, 384,832.69 and 79,062.14 is: 118,593.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,555.15 : 384,832.69 = 79,062.14 : x
  2. Step 2: Convert to fraction form
    256,555.15/384,832.69 = 79,062.14/x
  3. Step 3: Cross multiply
    256,555.15x = 384,832.69 × 79,062.14
  4. Step 4: Simplify right side
    256,555.15x = 30,425,696,777.78
  5. Step 5: Solve for x
    x = 30,425,696,777.78/256,555.15
  6. Step 6: Final answer
    x = 118,593.20

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1.5x scale

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.