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Finding the Fourth Proportional to 259,241.80, 388,905.90 and 101,475.40

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Solution

The fourth proportional to 259,241.80, 388,905.90 and 101,475.40 is: 152,230.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,241.80 : 388,905.90 = 101,475.40 : x
  2. Step 2: Convert to fraction form
    259,241.80/388,905.90 = 101,475.40/x
  3. Step 3: Cross multiply
    259,241.80x = 388,905.90 × 101,475.40
  4. Step 4: Simplify right side
    259,241.80x = 39,464,381,764.86
  5. Step 5: Solve for x
    x = 39,464,381,764.86/259,241.80
  6. Step 6: Final answer
    x = 152,230.01

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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.