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Finding the Fourth Proportional to 377,189.22, 519,984.81 and 300,031.86

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Solution

The fourth proportional to 377,189.22, 519,984.81 and 300,031.86 is: 413,617.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    377,189.22 : 519,984.81 = 300,031.86 : x
  2. Step 2: Convert to fraction form
    377,189.22/519,984.81 = 300,031.86/x
  3. Step 3: Cross multiply
    377,189.22x = 519,984.81 × 300,031.86
  4. Step 4: Simplify right side
    377,189.22x = 156,012,009,716.05
  5. Step 5: Solve for x
    x = 156,012,009,716.05/377,189.22
  6. Step 6: Final answer
    x = 413,617.36

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.