Home / 553,731.48-764,318.30-321,217.16

Finding the Fourth Proportional to 553,731.48, 764,318.30 and 321,217.16

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Solution

The fourth proportional to 553,731.48, 764,318.30 and 321,217.16 is: 443,377.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,731.48 : 764,318.30 = 321,217.16 : x
  2. Step 2: Convert to fraction form
    553,731.48/764,318.30 = 321,217.16/x
  3. Step 3: Cross multiply
    553,731.48x = 764,318.30 × 321,217.16
  4. Step 4: Simplify right side
    553,731.48x = 245,512,148,234.35
  5. Step 5: Solve for x
    x = 245,512,148,234.35/553,731.48
  6. Step 6: Final answer
    x = 443,377.62

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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.