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Finding the Fourth Proportional to 393,722.76, 543,337.40 and 214,874.76

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Solution

The fourth proportional to 393,722.76, 543,337.40 and 214,874.76 is: 296,527.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,722.76 : 543,337.40 = 214,874.76 : x
  2. Step 2: Convert to fraction form
    393,722.76/543,337.40 = 214,874.76/x
  3. Step 3: Cross multiply
    393,722.76x = 543,337.40 × 214,874.76
  4. Step 4: Simplify right side
    393,722.76x = 116,749,493,424.02
  5. Step 5: Solve for x
    x = 116,749,493,424.02/393,722.76
  6. Step 6: Final answer
    x = 296,527.16

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Double scale
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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.