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Finding the Fourth Proportional to 320,012.20, 480,018.30 and 201,298.60

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Solution

The fourth proportional to 320,012.20, 480,018.30 and 201,298.60 is: 301,947.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,012.20 : 480,018.30 = 201,298.60 : x
  2. Step 2: Convert to fraction form
    320,012.20/480,018.30 = 201,298.60/x
  3. Step 3: Cross multiply
    320,012.20x = 480,018.30 × 201,298.60
  4. Step 4: Simplify right side
    320,012.20x = 96,627,011,764.38
  5. Step 5: Solve for x
    x = 96,627,011,764.38/320,012.20
  6. Step 6: Final answer
    x = 301,947.90

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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.