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Finding the Fourth Proportional to 256,939.02, 385,419.06 and 69,950.52

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Solution

The fourth proportional to 256,939.02, 385,419.06 and 69,950.52 is: 104,928.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,939.02 : 385,419.06 = 69,950.52 : x
  2. Step 2: Convert to fraction form
    256,939.02/385,419.06 = 69,950.52/x
  3. Step 3: Cross multiply
    256,939.02x = 385,419.06 × 69,950.52
  4. Step 4: Simplify right side
    256,939.02x = 26,960,263,664.91
  5. Step 5: Solve for x
    x = 26,960,263,664.91/256,939.02
  6. Step 6: Final answer
    x = 104,928.65

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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.