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Finding the Fourth Proportional to 260,310.90, 390,459.04 and 82,828.56

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Solution

The fourth proportional to 260,310.90, 390,459.04 and 82,828.56 is: 124,240.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,310.90 : 390,459.04 = 82,828.56 : x
  2. Step 2: Convert to fraction form
    260,310.90/390,459.04 = 82,828.56/x
  3. Step 3: Cross multiply
    260,310.90x = 390,459.04 × 82,828.56
  4. Step 4: Simplify right side
    260,310.90x = 32,341,160,022.18
  5. Step 5: Solve for x
    x = 32,341,160,022.18/260,310.90
  6. Step 6: Final answer
    x = 124,240.51

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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.