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Finding the Fourth Proportional to 311,240.23, 429,710.15 and 254,016.25

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Solution

The fourth proportional to 311,240.23, 429,710.15 and 254,016.25 is: 350,704.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,240.23 : 429,710.15 = 254,016.25 : x
  2. Step 2: Convert to fraction form
    311,240.23/429,710.15 = 254,016.25/x
  3. Step 3: Cross multiply
    311,240.23x = 429,710.15 × 254,016.25
  4. Step 4: Simplify right side
    311,240.23x = 109,153,360,450.70
  5. Step 5: Solve for x
    x = 109,153,360,450.70/311,240.23
  6. Step 6: Final answer
    x = 350,704.54

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1.5x scale

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.