Home / 355,884.09-491,105.40-212,723.07

Finding the Fourth Proportional to 355,884.09, 491,105.40 and 212,723.07

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Solution

The fourth proportional to 355,884.09, 491,105.40 and 212,723.07 is: 293,549.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,884.09 : 491,105.40 = 212,723.07 : x
  2. Step 2: Convert to fraction form
    355,884.09/491,105.40 = 212,723.07/x
  3. Step 3: Cross multiply
    355,884.09x = 491,105.40 × 212,723.07
  4. Step 4: Simplify right side
    355,884.09x = 104,469,448,381.58
  5. Step 5: Solve for x
    x = 104,469,448,381.58/355,884.09
  6. Step 6: Final answer
    x = 293,549.08

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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.