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Finding the Fourth Proportional to 256,261.70, 383,485.35 and 223,343.30

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Solution

The fourth proportional to 256,261.70, 383,485.35 and 223,343.30 is: 334,224.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,261.70 : 383,485.35 = 223,343.30 : x
  2. Step 2: Convert to fraction form
    256,261.70/383,485.35 = 223,343.30/x
  3. Step 3: Cross multiply
    256,261.70x = 383,485.35 × 223,343.30
  4. Step 4: Simplify right side
    256,261.70x = 85,648,883,570.66
  5. Step 5: Solve for x
    x = 85,648,883,570.66/256,261.70
  6. Step 6: Final answer
    x = 334,224.29

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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.