Home / 419,632.12-629,510.70-149,739.20

Finding the Fourth Proportional to 419,632.12, 629,510.70 and 149,739.20

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Solution

The fourth proportional to 419,632.12, 629,510.70 and 149,739.20 is: 224,631.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,632.12 : 629,510.70 = 149,739.20 : x
  2. Step 2: Convert to fraction form
    419,632.12/629,510.70 = 149,739.20/x
  3. Step 3: Cross multiply
    419,632.12x = 629,510.70 × 149,739.20
  4. Step 4: Simplify right side
    419,632.12x = 94,262,427,860.74
  5. Step 5: Solve for x
    x = 94,262,427,860.74/419,632.12
  6. Step 6: Final answer
    x = 224,631.11

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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.