Home / 321,435.18-482,156.73-221,568.51

Finding the Fourth Proportional to 321,435.18, 482,156.73 and 221,568.51

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Solution

The fourth proportional to 321,435.18, 482,156.73 and 221,568.51 is: 332,355.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,435.18 : 482,156.73 = 221,568.51 : x
  2. Step 2: Convert to fraction form
    321,435.18/482,156.73 = 221,568.51/x
  3. Step 3: Cross multiply
    321,435.18x = 482,156.73 × 221,568.51
  4. Step 4: Simplify right side
    321,435.18x = 106,830,748,252.57
  5. Step 5: Solve for x
    x = 106,830,748,252.57/321,435.18
  6. Step 6: Final answer
    x = 332,355.49

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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.