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Finding the Fourth Proportional to 321,519.69, 482,283.63 and 221,653.17

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Solution

The fourth proportional to 321,519.69, 482,283.63 and 221,653.17 is: 332,482.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,519.69 : 482,283.63 = 221,653.17 : x
  2. Step 2: Convert to fraction form
    321,519.69/482,283.63 = 221,653.17/x
  3. Step 3: Cross multiply
    321,519.69x = 482,283.63 × 221,653.17
  4. Step 4: Simplify right side
    321,519.69x = 106,899,695,428.61
  5. Step 5: Solve for x
    x = 106,899,695,428.61/321,519.69
  6. Step 6: Final answer
    x = 332,482.58

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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.