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Finding the Fourth Proportional to 356,436.51, 491,882.31 and 213,230.22

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Solution

The fourth proportional to 356,436.51, 491,882.31 and 213,230.22 is: 294,257.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,436.51 : 491,882.31 = 213,230.22 : x
  2. Step 2: Convert to fraction form
    356,436.51/491,882.31 = 213,230.22/x
  3. Step 3: Cross multiply
    356,436.51x = 491,882.31 × 213,230.22
  4. Step 4: Simplify right side
    356,436.51x = 104,884,173,175.41
  5. Step 5: Solve for x
    x = 104,884,173,175.41/356,436.51
  6. Step 6: Final answer
    x = 294,257.66

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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.