Home / 260,078.31-390,130.97-82,599.21

Finding the Fourth Proportional to 260,078.31, 390,130.97 and 82,599.21

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Solution

The fourth proportional to 260,078.31, 390,130.97 and 82,599.21 is: 123,903.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,078.31 : 390,130.97 = 82,599.21 : x
  2. Step 2: Convert to fraction form
    260,078.31/390,130.97 = 82,599.21/x
  3. Step 3: Cross multiply
    260,078.31x = 390,130.97 × 82,599.21
  4. Step 4: Simplify right side
    260,078.31x = 32,224,509,505.54
  5. Step 5: Solve for x
    x = 32,224,509,505.54/260,078.31
  6. Step 6: Final answer
    x = 123,903.10

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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.