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Finding the Fourth Proportional to 543,183.81, 814,681.75 and 143,830.32

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Solution

The fourth proportional to 543,183.81, 814,681.75 and 143,830.32 is: 215,720.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,183.81 : 814,681.75 = 143,830.32 : x
  2. Step 2: Convert to fraction form
    543,183.81/814,681.75 = 143,830.32/x
  3. Step 3: Cross multiply
    543,183.81x = 814,681.75 × 143,830.32
  4. Step 4: Simplify right side
    543,183.81x = 117,175,936,800.66
  5. Step 5: Solve for x
    x = 117,175,936,800.66/543,183.81
  6. Step 6: Final answer
    x = 215,720.60

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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.