Home / 485,336.36-669,766.40-281,507.96

Finding the Fourth Proportional to 485,336.36, 669,766.40 and 281,507.96

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Solution

The fourth proportional to 485,336.36, 669,766.40 and 281,507.96 is: 388,482.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,336.36 : 669,766.40 = 281,507.96 : x
  2. Step 2: Convert to fraction form
    485,336.36/669,766.40 = 281,507.96/x
  3. Step 3: Cross multiply
    485,336.36x = 669,766.40 × 281,507.96
  4. Step 4: Simplify right side
    485,336.36x = 188,544,568,184.17
  5. Step 5: Solve for x
    x = 188,544,568,184.17/485,336.36
  6. Step 6: Final answer
    x = 388,482.27

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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.