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Finding the Fourth Proportional to 321,551.10, 482,054.49 and 121,761.36

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Solution

The fourth proportional to 321,551.10, 482,054.49 and 121,761.36 is: 182,538.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,551.10 : 482,054.49 = 121,761.36 : x
  2. Step 2: Convert to fraction form
    321,551.10/482,054.49 = 121,761.36/x
  3. Step 3: Cross multiply
    321,551.10x = 482,054.49 × 121,761.36
  4. Step 4: Simplify right side
    321,551.10x = 58,695,610,296.51
  5. Step 5: Solve for x
    x = 58,695,610,296.51/321,551.10
  6. Step 6: Final answer
    x = 182,538.98

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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.