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Finding the Fourth Proportional to 256,550.70, 384,868.17 and 79,057.74

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Solution

The fourth proportional to 256,550.70, 384,868.17 and 79,057.74 is: 118,599.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,550.70 : 384,868.17 = 79,057.74 : x
  2. Step 2: Convert to fraction form
    256,550.70/384,868.17 = 79,057.74/x
  3. Step 3: Cross multiply
    256,550.70x = 384,868.17 × 79,057.74
  4. Step 4: Simplify right side
    256,550.70x = 30,426,807,718.14
  5. Step 5: Solve for x
    x = 30,426,807,718.14/256,550.70
  6. Step 6: Final answer
    x = 118,599.59

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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.