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Finding the Fourth Proportional to 480,216.60, 720,361.35 and 143,230.88

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Solution

The fourth proportional to 480,216.60, 720,361.35 and 143,230.88 is: 214,857.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    480,216.60 : 720,361.35 = 143,230.88 : x
  2. Step 2: Convert to fraction form
    480,216.60/720,361.35 = 143,230.88/x
  3. Step 3: Cross multiply
    480,216.60x = 720,361.35 × 143,230.88
  4. Step 4: Simplify right side
    480,216.60x = 103,177,991,879.39
  5. Step 5: Solve for x
    x = 103,177,991,879.39/480,216.60
  6. Step 6: Final answer
    x = 214,857.20

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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.