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Finding the Fourth Proportional to 383,145.72, 528,741 and 222,094.23

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Solution

The fourth proportional to 383,145.72, 528,741 and 222,094.23 is: 306,489.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    383,145.72 : 528,741 = 222,094.23 : x
  2. Step 2: Convert to fraction form
    383,145.72/528,741 = 222,094.23/x
  3. Step 3: Cross multiply
    383,145.72x = 528,741 × 222,094.23
  4. Step 4: Simplify right side
    383,145.72x = 117,430,325,264.43
  5. Step 5: Solve for x
    x = 117,430,325,264.43/383,145.72
  6. Step 6: Final answer
    x = 306,489.98

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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.