Home / 355,320.11-490,184.25-211,996.82

Finding the Fourth Proportional to 355,320.11, 490,184.25 and 211,996.82

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Solution

The fourth proportional to 355,320.11, 490,184.25 and 211,996.82 is: 292,461.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,320.11 : 490,184.25 = 211,996.82 : x
  2. Step 2: Convert to fraction form
    355,320.11/490,184.25 = 211,996.82/x
  3. Step 3: Cross multiply
    355,320.11x = 490,184.25 × 211,996.82
  4. Step 4: Simplify right side
    355,320.11x = 103,917,502,214.09
  5. Step 5: Solve for x
    x = 103,917,502,214.09/355,320.11
  6. Step 6: Final answer
    x = 292,461.64

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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.