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Finding the Fourth Proportional to 320,608.20, 480,898.63 and 83,945.64

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Solution

The fourth proportional to 320,608.20, 480,898.63 and 83,945.64 is: 125,914.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,608.20 : 480,898.63 = 83,945.64 : x
  2. Step 2: Convert to fraction form
    320,608.20/480,898.63 = 83,945.64/x
  3. Step 3: Cross multiply
    320,608.20x = 480,898.63 × 83,945.64
  4. Step 4: Simplify right side
    320,608.20x = 40,369,343,270.47
  5. Step 5: Solve for x
    x = 40,369,343,270.47/320,608.20
  6. Step 6: Final answer
    x = 125,914.88

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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.