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Finding the Fourth Proportional to 268,756.32, 403,135.32 and 66,352.45

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Solution

The fourth proportional to 268,756.32, 403,135.32 and 66,352.45 is: 99,528.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,756.32 : 403,135.32 = 66,352.45 : x
  2. Step 2: Convert to fraction form
    268,756.32/403,135.32 = 66,352.45/x
  3. Step 3: Cross multiply
    268,756.32x = 403,135.32 × 66,352.45
  4. Step 4: Simplify right side
    268,756.32x = 26,749,013,816.10
  5. Step 5: Solve for x
    x = 26,749,013,816.10/268,756.32
  6. Step 6: Final answer
    x = 99,528.87

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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.