Home / 260,019,509.40-390,087,000.90-87,491,453.40

Finding the Fourth Proportional to 260,019,509.40, 390,087,000.90 and 87,491,453.40

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Solution

The fourth proportional to 260,019,509.40, 390,087,000.90 and 87,491,453.40 is: 131,256,607.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,019,509.40 : 390,087,000.90 = 87,491,453.40 : x
  2. Step 2: Convert to fraction form
    260,019,509.40/390,087,000.90 = 87,491,453.40/x
  3. Step 3: Cross multiply
    260,019,509.40x = 390,087,000.90 × 87,491,453.40
  4. Step 4: Simplify right side
    260,019,509.40x = 34,129,278,661,188,108
  5. Step 5: Solve for x
    x = 34,129,278,661,188,108/260,019,509.40
  6. Step 6: Final answer
    x = 131,256,607.40

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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.