Home / 260,604,435.20-390,954,708.48-85,737,315.20

Finding the Fourth Proportional to 260,604,435.20, 390,954,708.48 and 85,737,315.20

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Solution

The fourth proportional to 260,604,435.20, 390,954,708.48 and 85,737,315.20 is: 128,621,782.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,604,435.20 : 390,954,708.48 = 85,737,315.20 : x
  2. Step 2: Convert to fraction form
    260,604,435.20/390,954,708.48 = 85,737,315.20/x
  3. Step 3: Cross multiply
    260,604,435.20x = 390,954,708.48 × 85,737,315.20
  4. Step 4: Simplify right side
    260,604,435.20x = 33,519,407,069,873,876
  5. Step 5: Solve for x
    x = 33,519,407,069,873,876/260,604,435.20
  6. Step 6: Final answer
    x = 128,621,782.83

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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.