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Finding the Fourth Proportional to 297,978.75, 446,672.88 and 139,924.26

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Solution

The fourth proportional to 297,978.75, 446,672.88 and 139,924.26 is: 209,747.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    297,978.75 : 446,672.88 = 139,924.26 : x
  2. Step 2: Convert to fraction form
    297,978.75/446,672.88 = 139,924.26/x
  3. Step 3: Cross multiply
    297,978.75x = 446,672.88 × 139,924.26
  4. Step 4: Simplify right side
    297,978.75x = 62,500,372,196.07
  5. Step 5: Solve for x
    x = 62,500,372,196.07/297,978.75
  6. Step 6: Final answer
    x = 209,747.75

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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.