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Finding the Fourth Proportional to 325,090.80, 487,483.11 and 211,054.14

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Solution

The fourth proportional to 325,090.80, 487,483.11 and 211,054.14 is: 316,481.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    325,090.80 : 487,483.11 = 211,054.14 : x
  2. Step 2: Convert to fraction form
    325,090.80/487,483.11 = 211,054.14/x
  3. Step 3: Cross multiply
    325,090.80x = 487,483.11 × 211,054.14
  4. Step 4: Simplify right side
    325,090.80x = 102,885,328,545.58
  5. Step 5: Solve for x
    x = 102,885,328,545.58/325,090.80
  6. Step 6: Final answer
    x = 316,481.82

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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.