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Finding the Fourth Proportional to 356,381.52, 491,806.46 and 213,141.58

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Solution

The fourth proportional to 356,381.52, 491,806.46 and 213,141.58 is: 294,135.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,381.52 : 491,806.46 = 213,141.58 : x
  2. Step 2: Convert to fraction form
    356,381.52/491,806.46 = 213,141.58/x
  3. Step 3: Cross multiply
    356,381.52x = 491,806.46 × 213,141.58
  4. Step 4: Simplify right side
    356,381.52x = 104,824,405,938.61
  5. Step 5: Solve for x
    x = 104,824,405,938.61/356,381.52
  6. Step 6: Final answer
    x = 294,135.36

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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.