Home / 260,082.51-390,137.25-82,603.41

Finding the Fourth Proportional to 260,082.51, 390,137.25 and 82,603.41

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Solution

The fourth proportional to 260,082.51, 390,137.25 and 82,603.41 is: 123,909.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,082.51 : 390,137.25 = 82,603.41 : x
  2. Step 2: Convert to fraction form
    260,082.51/390,137.25 = 82,603.41/x
  3. Step 3: Cross multiply
    260,082.51x = 390,137.25 × 82,603.41
  4. Step 4: Simplify right side
    260,082.51x = 32,226,667,218.02
  5. Step 5: Solve for x
    x = 32,226,667,218.02/260,082.51
  6. Step 6: Final answer
    x = 123,909.40

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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.