Home / 428,540.16-591,373.44-258,712.32

Finding the Fourth Proportional to 428,540.16, 591,373.44 and 258,712.32

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Solution

The fourth proportional to 428,540.16, 591,373.44 and 258,712.32 is: 357,015.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    428,540.16 : 591,373.44 = 258,712.32 : x
  2. Step 2: Convert to fraction form
    428,540.16/591,373.44 = 258,712.32/x
  3. Step 3: Cross multiply
    428,540.16x = 591,373.44 × 258,712.32
  4. Step 4: Simplify right side
    428,540.16x = 152,995,594,648.78
  5. Step 5: Solve for x
    x = 152,995,594,648.78/428,540.16
  6. Step 6: Final answer
    x = 357,015.77

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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.