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Finding the Fourth Proportional to 331,498.91, 497,297.37 and 121,087.64

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Solution

The fourth proportional to 331,498.91, 497,297.37 and 121,087.64 is: 181,649.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    331,498.91 : 497,297.37 = 121,087.64 : x
  2. Step 2: Convert to fraction form
    331,498.91/497,297.37 = 121,087.64/x
  3. Step 3: Cross multiply
    331,498.91x = 497,297.37 × 121,087.64
  4. Step 4: Simplify right side
    331,498.91x = 60,216,564,911.51
  5. Step 5: Solve for x
    x = 60,216,564,911.51/331,498.91
  6. Step 6: Final answer
    x = 181,649.36

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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.