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Finding the Fourth Proportional to 268,756.55, 403,135.66 and 66,352.68

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Solution

The fourth proportional to 268,756.55, 403,135.66 and 66,352.68 is: 99,529.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,756.55 : 403,135.66 = 66,352.68 : x
  2. Step 2: Convert to fraction form
    268,756.55/403,135.66 = 66,352.68/x
  3. Step 3: Cross multiply
    268,756.55x = 403,135.66 × 66,352.68
  4. Step 4: Simplify right side
    268,756.55x = 26,749,131,444.57
  5. Step 5: Solve for x
    x = 26,749,131,444.57/268,756.55
  6. Step 6: Final answer
    x = 99,529.23

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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.