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Finding the Fourth Proportional to 213,187.54, 319,725.60 and 63,387.49

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Solution

The fourth proportional to 213,187.54, 319,725.60 and 63,387.49 is: 95,064.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,187.54 : 319,725.60 = 63,387.49 : x
  2. Step 2: Convert to fraction form
    213,187.54/319,725.60 = 63,387.49/x
  3. Step 3: Cross multiply
    213,187.54x = 319,725.60 × 63,387.49
  4. Step 4: Simplify right side
    213,187.54x = 20,266,603,272.74
  5. Step 5: Solve for x
    x = 20,266,603,272.74/213,187.54
  6. Step 6: Final answer
    x = 95,064.67

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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.