Home / 371,929.80-513,394.74-221,025

Finding the Fourth Proportional to 371,929.80, 513,394.74 and 221,025

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Solution

The fourth proportional to 371,929.80, 513,394.74 and 221,025 is: 305,092.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,929.80 : 513,394.74 = 221,025 : x
  2. Step 2: Convert to fraction form
    371,929.80/513,394.74 = 221,025/x
  3. Step 3: Cross multiply
    371,929.80x = 513,394.74 × 221,025
  4. Step 4: Simplify right side
    371,929.80x = 113,473,072,408.50
  5. Step 5: Solve for x
    x = 113,473,072,408.50/371,929.80
  6. Step 6: Final answer
    x = 305,092.71

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.