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Finding the Fourth Proportional to 385,241.90, 577,888.21 and 100,939.41

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Solution

The fourth proportional to 385,241.90, 577,888.21 and 100,939.41 is: 151,415.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,241.90 : 577,888.21 = 100,939.41 : x
  2. Step 2: Convert to fraction form
    385,241.90/577,888.21 = 100,939.41/x
  3. Step 3: Cross multiply
    385,241.90x = 577,888.21 × 100,939.41
  4. Step 4: Simplify right side
    385,241.90x = 58,331,694,963.36
  5. Step 5: Solve for x
    x = 58,331,694,963.36/385,241.90
  6. Step 6: Final answer
    x = 151,415.76

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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.