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Finding the Fourth Proportional to 256,926.94, 385,427.16 and 79,447.64

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Solution

The fourth proportional to 256,926.94, 385,427.16 and 79,447.64 is: 119,182.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,926.94 : 385,427.16 = 79,447.64 : x
  2. Step 2: Convert to fraction form
    256,926.94/385,427.16 = 79,447.64/x
  3. Step 3: Cross multiply
    256,926.94x = 385,427.16 × 79,447.64
  4. Step 4: Simplify right side
    256,926.94x = 30,621,276,326.77
  5. Step 5: Solve for x
    x = 30,621,276,326.77/256,926.94
  6. Step 6: Final answer
    x = 119,182.82

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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.