Home / 486,338.27-671,158.15-305,057.84

Finding the Fourth Proportional to 486,338.27, 671,158.15 and 305,057.84

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Solution

The fourth proportional to 486,338.27, 671,158.15 and 305,057.84 is: 420,986.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,338.27 : 671,158.15 = 305,057.84 : x
  2. Step 2: Convert to fraction form
    486,338.27/671,158.15 = 305,057.84/x
  3. Step 3: Cross multiply
    486,338.27x = 671,158.15 × 305,057.84
  4. Step 4: Simplify right side
    486,338.27x = 204,742,051,418.96
  5. Step 5: Solve for x
    x = 204,742,051,418.96/486,338.27
  6. Step 6: Final answer
    x = 420,986.93

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.