Home / 481,505.40-721,739.70-181,870.20

Finding the Fourth Proportional to 481,505.40, 721,739.70 and 181,870.20

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Solution

The fourth proportional to 481,505.40, 721,739.70 and 181,870.20 is: 272,609.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    481,505.40 : 721,739.70 = 181,870.20 : x
  2. Step 2: Convert to fraction form
    481,505.40/721,739.70 = 181,870.20/x
  3. Step 3: Cross multiply
    481,505.40x = 721,739.70 × 181,870.20
  4. Step 4: Simplify right side
    481,505.40x = 131,262,943,586.94
  5. Step 5: Solve for x
    x = 131,262,943,586.94/481,505.40
  6. Step 6: Final answer
    x = 272,609.49

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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.