Home / 476,917.25-715,982.90-309,139.65

Finding the Fourth Proportional to 476,917.25, 715,982.90 and 309,139.65

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Solution

The fourth proportional to 476,917.25, 715,982.90 and 309,139.65 is: 464,102.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    476,917.25 : 715,982.90 = 309,139.65 : x
  2. Step 2: Convert to fraction form
    476,917.25/715,982.90 = 309,139.65/x
  3. Step 3: Cross multiply
    476,917.25x = 715,982.90 × 309,139.65
  4. Step 4: Simplify right side
    476,917.25x = 221,338,701,566.29
  5. Step 5: Solve for x
    x = 221,338,701,566.29/476,917.25
  6. Step 6: Final answer
    x = 464,102.95

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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.