Home / 260,566.59-390,865.37-100,643.73

Finding the Fourth Proportional to 260,566.59, 390,865.37 and 100,643.73

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Solution

The fourth proportional to 260,566.59, 390,865.37 and 100,643.73 is: 150,971.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,566.59 : 390,865.37 = 100,643.73 : x
  2. Step 2: Convert to fraction form
    260,566.59/390,865.37 = 100,643.73/x
  3. Step 3: Cross multiply
    260,566.59x = 390,865.37 × 100,643.73
  4. Step 4: Simplify right side
    260,566.59x = 39,338,148,764.63
  5. Step 5: Solve for x
    x = 39,338,148,764.63/260,566.59
  6. Step 6: Final answer
    x = 150,971.58

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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.