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Finding the Fourth Proportional to 256,148.67, 384,211.61 and 87,684.06

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Solution

The fourth proportional to 256,148.67, 384,211.61 and 87,684.06 is: 131,522.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,148.67 : 384,211.61 = 87,684.06 : x
  2. Step 2: Convert to fraction form
    256,148.67/384,211.61 = 87,684.06/x
  3. Step 3: Cross multiply
    256,148.67x = 384,211.61 × 87,684.06
  4. Step 4: Simplify right side
    256,148.67x = 33,689,233,425.52
  5. Step 5: Solve for x
    x = 33,689,233,425.52/256,148.67
  6. Step 6: Final answer
    x = 131,522.19

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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.