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Finding the Fourth Proportional to 383,390.49, 575,341.70 and 134,072.49

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Solution

The fourth proportional to 383,390.49, 575,341.70 and 134,072.49 is: 201,198.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    383,390.49 : 575,341.70 = 134,072.49 : x
  2. Step 2: Convert to fraction form
    383,390.49/575,341.70 = 134,072.49/x
  3. Step 3: Cross multiply
    383,390.49x = 575,341.70 × 134,072.49
  4. Step 4: Simplify right side
    383,390.49x = 77,137,493,649.47
  5. Step 5: Solve for x
    x = 77,137,493,649.47/383,390.49
  6. Step 6: Final answer
    x = 201,198.24

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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.