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Finding the Fourth Proportional to 343,773.77, 515,133.21 and 143,984.84

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Solution

The fourth proportional to 343,773.77, 515,133.21 and 143,984.84 is: 215,756.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    343,773.77 : 515,133.21 = 143,984.84 : x
  2. Step 2: Convert to fraction form
    343,773.77/515,133.21 = 143,984.84/x
  3. Step 3: Cross multiply
    343,773.77x = 515,133.21 × 143,984.84
  4. Step 4: Simplify right side
    343,773.77x = 74,171,372,820.54
  5. Step 5: Solve for x
    x = 74,171,372,820.54/343,773.77
  6. Step 6: Final answer
    x = 215,756.35

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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.