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Finding the Fourth Proportional to 355,732.71, 491,036.22 and 219,870.87

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Solution

The fourth proportional to 355,732.71, 491,036.22 and 219,870.87 is: 303,499.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,732.71 : 491,036.22 = 219,870.87 : x
  2. Step 2: Convert to fraction form
    355,732.71/491,036.22 = 219,870.87/x
  3. Step 3: Cross multiply
    355,732.71x = 491,036.22 × 219,870.87
  4. Step 4: Simplify right side
    355,732.71x = 107,964,560,892.91
  5. Step 5: Solve for x
    x = 107,964,560,892.91/355,732.71
  6. Step 6: Final answer
    x = 303,499.11

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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.