Home / 439,531,907.20-659,297,860.80-132,871,350.40

Finding the Fourth Proportional to 439,531,907.20, 659,297,860.80 and 132,871,350.40

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Solution

The fourth proportional to 439,531,907.20, 659,297,860.80 and 132,871,350.40 is: 199,307,025.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,531,907.20 : 659,297,860.80 = 132,871,350.40 : x
  2. Step 2: Convert to fraction form
    439,531,907.20/659,297,860.80 = 132,871,350.40/x
  3. Step 3: Cross multiply
    439,531,907.20x = 659,297,860.80 × 132,871,350.40
  4. Step 4: Simplify right side
    439,531,907.20x = 87,601,797,080,327,216
  5. Step 5: Solve for x
    x = 87,601,797,080,327,216/439,531,907.20
  6. Step 6: Final answer
    x = 199,307,025.60

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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.