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Finding the Fourth Proportional to 256,591.37, 385,236.11 and 144,350.58

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Solution

The fourth proportional to 256,591.37, 385,236.11 and 144,350.58 is: 216,722.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,591.37 : 385,236.11 = 144,350.58 : x
  2. Step 2: Convert to fraction form
    256,591.37/385,236.11 = 144,350.58/x
  3. Step 3: Cross multiply
    256,591.37x = 385,236.11 × 144,350.58
  4. Step 4: Simplify right side
    256,591.37x = 55,609,055,915.44
  5. Step 5: Solve for x
    x = 55,609,055,915.44/256,591.37
  6. Step 6: Final answer
    x = 216,722.24

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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.