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Finding the Fourth Proportional to 420,008.19, 629,758.95 and 167,327.67

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Solution

The fourth proportional to 420,008.19, 629,758.95 and 167,327.67 is: 250,890.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,008.19 : 629,758.95 = 167,327.67 : x
  2. Step 2: Convert to fraction form
    420,008.19/629,758.95 = 167,327.67/x
  3. Step 3: Cross multiply
    420,008.19x = 629,758.95 × 167,327.67
  4. Step 4: Simplify right side
    420,008.19x = 105,376,100,440.48
  5. Step 5: Solve for x
    x = 105,376,100,440.48/420,008.19
  6. Step 6: Final answer
    x = 250,890.59

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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.