Home / 485,243.10-669,626.44-270,378.58

Finding the Fourth Proportional to 485,243.10, 669,626.44 and 270,378.58

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Solution

The fourth proportional to 485,243.10, 669,626.44 and 270,378.58 is: 373,117.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,243.10 : 669,626.44 = 270,378.58 : x
  2. Step 2: Convert to fraction form
    485,243.10/669,626.44 = 270,378.58/x
  3. Step 3: Cross multiply
    485,243.10x = 669,626.44 × 270,378.58
  4. Step 4: Simplify right side
    485,243.10x = 181,052,645,977.66
  5. Step 5: Solve for x
    x = 181,052,645,977.66/485,243.10
  6. Step 6: Final answer
    x = 373,117.40

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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.