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Finding the Fourth Proportional to 499,871.40, 749,223.90 and 200,203.80

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Solution

The fourth proportional to 499,871.40, 749,223.90 and 200,203.80 is: 300,072.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    499,871.40 : 749,223.90 = 200,203.80 : x
  2. Step 2: Convert to fraction form
    499,871.40/749,223.90 = 200,203.80/x
  3. Step 3: Cross multiply
    499,871.40x = 749,223.90 × 200,203.80
  4. Step 4: Simplify right side
    499,871.40x = 149,997,471,830.82
  5. Step 5: Solve for x
    x = 149,997,471,830.82/499,871.40
  6. Step 6: Final answer
    x = 300,072.12

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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.