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Finding the Fourth Proportional to 320,818.28, 480,956.80 and 202,228.24

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Solution

The fourth proportional to 320,818.28, 480,956.80 and 202,228.24 is: 303,171.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,818.28 : 480,956.80 = 202,228.24 : x
  2. Step 2: Convert to fraction form
    320,818.28/480,956.80 = 202,228.24/x
  3. Step 3: Cross multiply
    320,818.28x = 480,956.80 × 202,228.24
  4. Step 4: Simplify right side
    320,818.28x = 97,263,047,180.03
  5. Step 5: Solve for x
    x = 97,263,047,180.03/320,818.28
  6. Step 6: Final answer
    x = 303,171.77

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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.