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Finding the Fourth Proportional to 480,182.85, 720,310.86 and 143,197.20

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Solution

The fourth proportional to 480,182.85, 720,310.86 and 143,197.20 is: 214,806.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    480,182.85 : 720,310.86 = 143,197.20 : x
  2. Step 2: Convert to fraction form
    480,182.85/720,310.86 = 143,197.20/x
  3. Step 3: Cross multiply
    480,182.85x = 720,310.86 × 143,197.20
  4. Step 4: Simplify right side
    480,182.85x = 103,146,498,281.59
  5. Step 5: Solve for x
    x = 103,146,498,281.59/480,182.85
  6. Step 6: Final answer
    x = 214,806.71

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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.