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Finding the Fourth Proportional to 256,590.43, 384,901.44 and 98,819.44

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Solution

The fourth proportional to 256,590.43, 384,901.44 and 98,819.44 is: 148,235.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,590.43 : 384,901.44 = 98,819.44 : x
  2. Step 2: Convert to fraction form
    256,590.43/384,901.44 = 98,819.44/x
  3. Step 3: Cross multiply
    256,590.43x = 384,901.44 × 98,819.44
  4. Step 4: Simplify right side
    256,590.43x = 38,035,744,755.99
  5. Step 5: Solve for x
    x = 38,035,744,755.99/256,590.43
  6. Step 6: Final answer
    x = 148,235.24

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1.5x scale

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.