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Finding the Fourth Proportional to 381,144.96, 525,981.60 and 211,394.88

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Solution

The fourth proportional to 381,144.96, 525,981.60 and 211,394.88 is: 291,725.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,144.96 : 525,981.60 = 211,394.88 : x
  2. Step 2: Convert to fraction form
    381,144.96/525,981.60 = 211,394.88/x
  3. Step 3: Cross multiply
    381,144.96x = 525,981.60 × 211,394.88
  4. Step 4: Simplify right side
    381,144.96x = 111,189,817,214.21
  5. Step 5: Solve for x
    x = 111,189,817,214.21/381,144.96
  6. Step 6: Final answer
    x = 291,725.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.