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Finding the Fourth Proportional to 320,276.76, 480,586.47 and 207,930.57

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Solution

The fourth proportional to 320,276.76, 480,586.47 and 207,930.57 is: 312,007.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,276.76 : 480,586.47 = 207,930.57 : x
  2. Step 2: Convert to fraction form
    320,276.76/480,586.47 = 207,930.57/x
  3. Step 3: Cross multiply
    320,276.76x = 480,586.47 × 207,930.57
  4. Step 4: Simplify right side
    320,276.76x = 99,928,618,641.39
  5. Step 5: Solve for x
    x = 99,928,618,641.39/320,276.76
  6. Step 6: Final answer
    x = 312,007.09

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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.