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Finding the Fourth Proportional to 268,907.37, 403,267.01 and 79,317.45

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Solution

The fourth proportional to 268,907.37, 403,267.01 and 79,317.45 is: 118,948.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,907.37 : 403,267.01 = 79,317.45 : x
  2. Step 2: Convert to fraction form
    268,907.37/403,267.01 = 79,317.45/x
  3. Step 3: Cross multiply
    268,907.37x = 403,267.01 × 79,317.45
  4. Step 4: Simplify right side
    268,907.37x = 31,986,110,505.74
  5. Step 5: Solve for x
    x = 31,986,110,505.74/268,907.37
  6. Step 6: Final answer
    x = 118,948.43

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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.