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Finding the Fourth Proportional to 421,879.50, 632,687.99 and 141,331.14

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Solution

The fourth proportional to 421,879.50, 632,687.99 and 141,331.14 is: 211,952.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,879.50 : 632,687.99 = 141,331.14 : x
  2. Step 2: Convert to fraction form
    421,879.50/632,687.99 = 141,331.14/x
  3. Step 3: Cross multiply
    421,879.50x = 632,687.99 × 141,331.14
  4. Step 4: Simplify right side
    421,879.50x = 89,418,514,184.35
  5. Step 5: Solve for x
    x = 89,418,514,184.35/421,879.50
  6. Step 6: Final answer
    x = 211,952.74

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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.