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Finding the Fourth Proportional to 235,548.90, 324,943.02 and 139,987.98

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Solution

The fourth proportional to 235,548.90, 324,943.02 and 139,987.98 is: 193,115.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,548.90 : 324,943.02 = 139,987.98 : x
  2. Step 2: Convert to fraction form
    235,548.90/324,943.02 = 139,987.98/x
  3. Step 3: Cross multiply
    235,548.90x = 324,943.02 × 139,987.98
  4. Step 4: Simplify right side
    235,548.90x = 45,488,116,984.90
  5. Step 5: Solve for x
    x = 45,488,116,984.90/235,548.90
  6. Step 6: Final answer
    x = 193,115.39

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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.