Home / 428,254.20-591,268.08-275,361.04

Finding the Fourth Proportional to 428,254.20, 591,268.08 and 275,361.04

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Solution

The fourth proportional to 428,254.20, 591,268.08 and 275,361.04 is: 380,176.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    428,254.20 : 591,268.08 = 275,361.04 : x
  2. Step 2: Convert to fraction form
    428,254.20/591,268.08 = 275,361.04/x
  3. Step 3: Cross multiply
    428,254.20x = 591,268.08 × 275,361.04
  4. Step 4: Simplify right side
    428,254.20x = 162,812,193,427.60
  5. Step 5: Solve for x
    x = 162,812,193,427.60/428,254.20
  6. Step 6: Final answer
    x = 380,176.52

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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.