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Finding the Fourth Proportional to 320,279.20, 480,015.60 and 162,551.20

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Solution

The fourth proportional to 320,279.20, 480,015.60 and 162,551.20 is: 243,622.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,279.20 : 480,015.60 = 162,551.20 : x
  2. Step 2: Convert to fraction form
    320,279.20/480,015.60 = 162,551.20/x
  3. Step 3: Cross multiply
    320,279.20x = 480,015.60 × 162,551.20
  4. Step 4: Simplify right side
    320,279.20x = 78,027,111,798.72
  5. Step 5: Solve for x
    x = 78,027,111,798.72/320,279.20
  6. Step 6: Final answer
    x = 243,622.16

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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.