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Finding the Fourth Proportional to 256,571.12, 384,798.36 and 123,382.82

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Solution

The fourth proportional to 256,571.12, 384,798.36 and 123,382.82 is: 185,046.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,571.12 : 384,798.36 = 123,382.82 : x
  2. Step 2: Convert to fraction form
    256,571.12/384,798.36 = 123,382.82/x
  3. Step 3: Cross multiply
    256,571.12x = 384,798.36 × 123,382.82
  4. Step 4: Simplify right side
    256,571.12x = 47,477,506,788.18
  5. Step 5: Solve for x
    x = 47,477,506,788.18/256,571.12
  6. Step 6: Final answer
    x = 185,046.18

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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.