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Finding the Fourth Proportional to 423,997.75, 636,288.23 and 174,679.75

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Solution

The fourth proportional to 423,997.75, 636,288.23 and 174,679.75 is: 262,139.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    423,997.75 : 636,288.23 = 174,679.75 : x
  2. Step 2: Convert to fraction form
    423,997.75/636,288.23 = 174,679.75/x
  3. Step 3: Cross multiply
    423,997.75x = 636,288.23 × 174,679.75
  4. Step 4: Simplify right side
    423,997.75x = 111,146,668,944.34
  5. Step 5: Solve for x
    x = 111,146,668,944.34/423,997.75
  6. Step 6: Final answer
    x = 262,139.76

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1.5x scale

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.