Home / 371,320.45-512,384.82-210,147.44

Finding the Fourth Proportional to 371,320.45, 512,384.82 and 210,147.44

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Solution

The fourth proportional to 371,320.45, 512,384.82 and 210,147.44 is: 289,982.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,320.45 : 512,384.82 = 210,147.44 : x
  2. Step 2: Convert to fraction form
    371,320.45/512,384.82 = 210,147.44/x
  3. Step 3: Cross multiply
    371,320.45x = 512,384.82 × 210,147.44
  4. Step 4: Simplify right side
    371,320.45x = 107,676,354,605.20
  5. Step 5: Solve for x
    x = 107,676,354,605.20/371,320.45
  6. Step 6: Final answer
    x = 289,982.29

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1.5x scale

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.