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Finding the Fourth Proportional to 256,856.94, 385,189.63 and 88,329.56

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Solution

The fourth proportional to 256,856.94, 385,189.63 and 88,329.56 is: 132,461.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,856.94 : 385,189.63 = 88,329.56 : x
  2. Step 2: Convert to fraction form
    256,856.94/385,189.63 = 88,329.56/x
  3. Step 3: Cross multiply
    256,856.94x = 385,189.63 × 88,329.56
  4. Step 4: Simplify right side
    256,856.94x = 34,023,628,387.69
  5. Step 5: Solve for x
    x = 34,023,628,387.69/256,856.94
  6. Step 6: Final answer
    x = 132,461.39

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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.