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Finding the Fourth Proportional to 480,018.30, 720,027.45 and 213,906.30

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Solution

The fourth proportional to 480,018.30, 720,027.45 and 213,906.30 is: 320,859.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    480,018.30 : 720,027.45 = 213,906.30 : x
  2. Step 2: Convert to fraction form
    480,018.30/720,027.45 = 213,906.30/x
  3. Step 3: Cross multiply
    480,018.30x = 720,027.45 × 213,906.30
  4. Step 4: Simplify right side
    480,018.30x = 154,018,407,727.94
  5. Step 5: Solve for x
    x = 154,018,407,727.94/480,018.30
  6. Step 6: Final answer
    x = 320,859.45

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Similar ratio
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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.