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Finding the Fourth Proportional to 256,772.52, 385,081.02 and 69,759.72

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Solution

The fourth proportional to 256,772.52, 385,081.02 and 69,759.72 is: 104,618.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,772.52 : 385,081.02 = 69,759.72 : x
  2. Step 2: Convert to fraction form
    256,772.52/385,081.02 = 69,759.72/x
  3. Step 3: Cross multiply
    256,772.52x = 385,081.02 × 69,759.72
  4. Step 4: Simplify right side
    256,772.52x = 26,863,144,132.51
  5. Step 5: Solve for x
    x = 26,863,144,132.51/256,772.52
  6. Step 6: Final answer
    x = 104,618.45

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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.