Home / 260,366.91-390,449.40-89,556.15

Finding the Fourth Proportional to 260,366.91, 390,449.40 and 89,556.15

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Solution

The fourth proportional to 260,366.91, 390,449.40 and 89,556.15 is: 134,299.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,366.91 : 390,449.40 = 89,556.15 : x
  2. Step 2: Convert to fraction form
    260,366.91/390,449.40 = 89,556.15/x
  3. Step 3: Cross multiply
    260,366.91x = 390,449.40 × 89,556.15
  4. Step 4: Simplify right side
    260,366.91x = 34,967,142,633.78
  5. Step 5: Solve for x
    x = 34,967,142,633.78/260,366.91
  6. Step 6: Final answer
    x = 134,299.49

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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.