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Finding the Fourth Proportional to 259,319.88, 389,154.78 and 101,528.64

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Solution

The fourth proportional to 259,319.88, 389,154.78 and 101,528.64 is: 152,361.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,319.88 : 389,154.78 = 101,528.64 : x
  2. Step 2: Convert to fraction form
    259,319.88/389,154.78 = 101,528.64/x
  3. Step 3: Cross multiply
    259,319.88x = 389,154.78 × 101,528.64
  4. Step 4: Simplify right side
    259,319.88x = 39,510,355,562.90
  5. Step 5: Solve for x
    x = 39,510,355,562.90/259,319.88
  6. Step 6: Final answer
    x = 152,361.46

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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.