Home / 260,308.89-390,456.05-82,826.55

Finding the Fourth Proportional to 260,308.89, 390,456.05 and 82,826.55

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Solution

The fourth proportional to 260,308.89, 390,456.05 and 82,826.55 is: 124,237.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,308.89 : 390,456.05 = 82,826.55 : x
  2. Step 2: Convert to fraction form
    260,308.89/390,456.05 = 82,826.55/x
  3. Step 3: Cross multiply
    260,308.89x = 390,456.05 × 82,826.55
  4. Step 4: Simplify right side
    260,308.89x = 32,340,127,133.99
  5. Step 5: Solve for x
    x = 32,340,127,133.99/260,308.89
  6. Step 6: Final answer
    x = 124,237.51

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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.