Home / 309,724.16-464,530.68-82,021.21

Finding the Fourth Proportional to 309,724.16, 464,530.68 and 82,021.21

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Solution

The fourth proportional to 309,724.16, 464,530.68 and 82,021.21 is: 123,017.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,724.16 : 464,530.68 = 82,021.21 : x
  2. Step 2: Convert to fraction form
    309,724.16/464,530.68 = 82,021.21/x
  3. Step 3: Cross multiply
    309,724.16x = 464,530.68 × 82,021.21
  4. Step 4: Simplify right side
    309,724.16x = 38,101,367,294.40
  5. Step 5: Solve for x
    x = 38,101,367,294.40/309,724.16
  6. Step 6: Final answer
    x = 123,017.10

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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.