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Finding the Fourth Proportional to 256,723.84, 385,086.84 and 168,535.36

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Solution

The fourth proportional to 256,723.84, 385,086.84 and 168,535.36 is: 252,803.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,723.84 : 385,086.84 = 168,535.36 : x
  2. Step 2: Convert to fraction form
    256,723.84/385,086.84 = 168,535.36/x
  3. Step 3: Cross multiply
    256,723.84x = 385,086.84 × 168,535.36
  4. Step 4: Simplify right side
    256,723.84x = 64,900,749,210.66
  5. Step 5: Solve for x
    x = 64,900,749,210.66/256,723.84
  6. Step 6: Final answer
    x = 252,803.75

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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.