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Finding the Fourth Proportional to 320,500.61, 480,751.72 and 130,960.97

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Solution

The fourth proportional to 320,500.61, 480,751.72 and 130,960.97 is: 196,441.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,500.61 : 480,751.72 = 130,960.97 : x
  2. Step 2: Convert to fraction form
    320,500.61/480,751.72 = 130,960.97/x
  3. Step 3: Cross multiply
    320,500.61x = 480,751.72 × 130,960.97
  4. Step 4: Simplify right side
    320,500.61x = 62,959,711,580.37
  5. Step 5: Solve for x
    x = 62,959,711,580.37/320,500.61
  6. Step 6: Final answer
    x = 196,441.79

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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.