Home / 355,324.11-490,189.77-212,000.82

Finding the Fourth Proportional to 355,324.11, 490,189.77 and 212,000.82

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Solution

The fourth proportional to 355,324.11, 490,189.77 and 212,000.82 is: 292,467.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,324.11 : 490,189.77 = 212,000.82 : x
  2. Step 2: Convert to fraction form
    355,324.11/490,189.77 = 212,000.82/x
  3. Step 3: Cross multiply
    355,324.11x = 490,189.77 × 212,000.82
  4. Step 4: Simplify right side
    355,324.11x = 103,920,633,195.61
  5. Step 5: Solve for x
    x = 103,920,633,195.61/355,324.11
  6. Step 6: Final answer
    x = 292,467.16

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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.