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Finding the Fourth Proportional to 256,600.08, 384,788.72 and 98,717.72

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Solution

The fourth proportional to 256,600.08, 384,788.72 and 98,717.72 is: 148,033.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,600.08 : 384,788.72 = 98,717.72 : x
  2. Step 2: Convert to fraction form
    256,600.08/384,788.72 = 98,717.72/x
  3. Step 3: Cross multiply
    256,600.08x = 384,788.72 × 98,717.72
  4. Step 4: Simplify right side
    256,600.08x = 37,985,465,120.12
  5. Step 5: Solve for x
    x = 37,985,465,120.12/256,600.08
  6. Step 6: Final answer
    x = 148,033.72

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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.