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Finding the Fourth Proportional to 303,799.65, 455,303.11 and 219,842.61

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Solution

The fourth proportional to 303,799.65, 455,303.11 and 219,842.61 is: 329,477.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,799.65 : 455,303.11 = 219,842.61 : x
  2. Step 2: Convert to fraction form
    303,799.65/455,303.11 = 219,842.61/x
  3. Step 3: Cross multiply
    303,799.65x = 455,303.11 × 219,842.61
  4. Step 4: Simplify right side
    303,799.65x = 100,095,024,043.52
  5. Step 5: Solve for x
    x = 100,095,024,043.52/303,799.65
  6. Step 6: Final answer
    x = 329,477.09

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.