Home / 428,017.21-590,640.19-234,387.33

Finding the Fourth Proportional to 428,017.21, 590,640.19 and 234,387.33

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Solution

The fourth proportional to 428,017.21, 590,640.19 and 234,387.33 is: 323,441.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    428,017.21 : 590,640.19 = 234,387.33 : x
  2. Step 2: Convert to fraction form
    428,017.21/590,640.19 = 234,387.33/x
  3. Step 3: Cross multiply
    428,017.21x = 590,640.19 × 234,387.33
  4. Step 4: Simplify right side
    428,017.21x = 138,438,577,124.79
  5. Step 5: Solve for x
    x = 138,438,577,124.79/428,017.21
  6. Step 6: Final answer
    x = 323,441.61

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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.