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Finding the Fourth Proportional to 356,438.82, 491,885.46 and 213,232.50

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Solution

The fourth proportional to 356,438.82, 491,885.46 and 213,232.50 is: 294,260.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,438.82 : 491,885.46 = 213,232.50 : x
  2. Step 2: Convert to fraction form
    356,438.82/491,885.46 = 213,232.50/x
  3. Step 3: Cross multiply
    356,438.82x = 491,885.46 × 213,232.50
  4. Step 4: Simplify right side
    356,438.82x = 104,885,966,349.45
  5. Step 5: Solve for x
    x = 104,885,966,349.45/356,438.82
  6. Step 6: Final answer
    x = 294,260.78

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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.