Home / 260,418.08-390,658.40-91,903.64

Finding the Fourth Proportional to 260,418.08, 390,658.40 and 91,903.64

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Solution

The fourth proportional to 260,418.08, 390,658.40 and 91,903.64 is: 137,866.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,418.08 : 390,658.40 = 91,903.64 : x
  2. Step 2: Convert to fraction form
    260,418.08/390,658.40 = 91,903.64/x
  3. Step 3: Cross multiply
    260,418.08x = 390,658.40 × 91,903.64
  4. Step 4: Simplify right side
    260,418.08x = 35,902,928,956.58
  5. Step 5: Solve for x
    x = 35,902,928,956.58/260,418.08
  6. Step 6: Final answer
    x = 137,866.50

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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.