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Finding the Fourth Proportional to 420,002.40, 629,930.70 and 153,625.80

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Solution

The fourth proportional to 420,002.40, 629,930.70 and 153,625.80 is: 230,412.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,002.40 : 629,930.70 = 153,625.80 : x
  2. Step 2: Convert to fraction form
    420,002.40/629,930.70 = 153,625.80/x
  3. Step 3: Cross multiply
    420,002.40x = 629,930.70 × 153,625.80
  4. Step 4: Simplify right side
    420,002.40x = 96,773,607,732.06
  5. Step 5: Solve for x
    x = 96,773,607,732.06/420,002.40
  6. Step 6: Final answer
    x = 230,412.04

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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.