Home / 414,742.80-621,653.40-178,045.20

Finding the Fourth Proportional to 414,742.80, 621,653.40 and 178,045.20

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Solution

The fourth proportional to 414,742.80, 621,653.40 and 178,045.20 is: 266,869.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    414,742.80 : 621,653.40 = 178,045.20 : x
  2. Step 2: Convert to fraction form
    414,742.80/621,653.40 = 178,045.20/x
  3. Step 3: Cross multiply
    414,742.80x = 621,653.40 × 178,045.20
  4. Step 4: Simplify right side
    414,742.80x = 110,682,403,933.68
  5. Step 5: Solve for x
    x = 110,682,403,933.68/414,742.80
  6. Step 6: Final answer
    x = 266,869.98

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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.