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Finding the Fourth Proportional to 420,010.40, 629,958.90 and 167,476.70

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Solution

The fourth proportional to 420,010.40, 629,958.90 and 167,476.70 is: 251,192.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,010.40 : 629,958.90 = 167,476.70 : x
  2. Step 2: Convert to fraction form
    420,010.40/629,958.90 = 167,476.70/x
  3. Step 3: Cross multiply
    420,010.40x = 629,958.90 × 167,476.70
  4. Step 4: Simplify right side
    420,010.40x = 105,503,437,707.63
  5. Step 5: Solve for x
    x = 105,503,437,707.63/420,010.40
  6. Step 6: Final answer
    x = 251,192.44

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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.