Home / 420,093.02-629,934.87-139,515.50

Finding the Fourth Proportional to 420,093.02, 629,934.87 and 139,515.50

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Solution

The fourth proportional to 420,093.02, 629,934.87 and 139,515.50 is: 209,205.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,093.02 : 629,934.87 = 139,515.50 : x
  2. Step 2: Convert to fraction form
    420,093.02/629,934.87 = 139,515.50/x
  3. Step 3: Cross multiply
    420,093.02x = 629,934.87 × 139,515.50
  4. Step 4: Simplify right side
    420,093.02x = 87,885,678,355.49
  5. Step 5: Solve for x
    x = 87,885,678,355.49/420,093.02
  6. Step 6: Final answer
    x = 209,205.28

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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.