Home / 208,540.02-312,853.78-90,228.18

Finding the Fourth Proportional to 208,540.02, 312,853.78 and 90,228.18

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Solution

The fourth proportional to 208,540.02, 312,853.78 and 90,228.18 is: 135,361.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,540.02 : 312,853.78 = 90,228.18 : x
  2. Step 2: Convert to fraction form
    208,540.02/312,853.78 = 90,228.18/x
  3. Step 3: Cross multiply
    208,540.02x = 312,853.78 × 90,228.18
  4. Step 4: Simplify right side
    208,540.02x = 28,228,227,175.52
  5. Step 5: Solve for x
    x = 28,228,227,175.52/208,540.02
  6. Step 6: Final answer
    x = 135,361.20

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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.