Home / 260,043.26-390,113.13-82,502.30

Finding the Fourth Proportional to 260,043.26, 390,113.13 and 82,502.30

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Solution

The fourth proportional to 260,043.26, 390,113.13 and 82,502.30 is: 123,768.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,043.26 : 390,113.13 = 82,502.30 : x
  2. Step 2: Convert to fraction form
    260,043.26/390,113.13 = 82,502.30/x
  3. Step 3: Cross multiply
    260,043.26x = 390,113.13 × 82,502.30
  4. Step 4: Simplify right side
    260,043.26x = 32,185,230,485.20
  5. Step 5: Solve for x
    x = 32,185,230,485.20/260,043.26
  6. Step 6: Final answer
    x = 123,768.75

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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.