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Finding the Fourth Proportional to 321,505.57, 482,159.87 and 222,303.25

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Solution

The fourth proportional to 321,505.57, 482,159.87 and 222,303.25 is: 333,386.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,505.57 : 482,159.87 = 222,303.25 : x
  2. Step 2: Convert to fraction form
    321,505.57/482,159.87 = 222,303.25/x
  3. Step 3: Cross multiply
    321,505.57x = 482,159.87 × 222,303.25
  4. Step 4: Simplify right side
    321,505.57x = 107,185,703,803.66
  5. Step 5: Solve for x
    x = 107,185,703,803.66/321,505.57
  6. Step 6: Final answer
    x = 333,386.77

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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.