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Finding the Fourth Proportional to 331,616.70, 497,619.45 and 121,275.90

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Solution

The fourth proportional to 331,616.70, 497,619.45 and 121,275.90 is: 181,984.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    331,616.70 : 497,619.45 = 121,275.90 : x
  2. Step 2: Convert to fraction form
    331,616.70/497,619.45 = 121,275.90/x
  3. Step 3: Cross multiply
    331,616.70x = 497,619.45 × 121,275.90
  4. Step 4: Simplify right side
    331,616.70x = 60,349,246,656.26
  5. Step 5: Solve for x
    x = 60,349,246,656.26/331,616.70
  6. Step 6: Final answer
    x = 181,984.94

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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.