Home / 260,138.61-390,205.89-133,814.25

Finding the Fourth Proportional to 260,138.61, 390,205.89 and 133,814.25

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Solution

The fourth proportional to 260,138.61, 390,205.89 and 133,814.25 is: 200,720.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,138.61 : 390,205.89 = 133,814.25 : x
  2. Step 2: Convert to fraction form
    260,138.61/390,205.89 = 133,814.25/x
  3. Step 3: Cross multiply
    260,138.61x = 390,205.89 × 133,814.25
  4. Step 4: Simplify right side
    260,138.61x = 52,215,108,515.93
  5. Step 5: Solve for x
    x = 52,215,108,515.93/260,138.61
  6. Step 6: Final answer
    x = 200,720.33

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1.5x scale

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.