Home / 286,149.24-428,932.26-128,335.32

Finding the Fourth Proportional to 286,149.24, 428,932.26 and 128,335.32

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Solution

The fourth proportional to 286,149.24, 428,932.26 and 128,335.32 is: 192,372.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,149.24 : 428,932.26 = 128,335.32 : x
  2. Step 2: Convert to fraction form
    286,149.24/428,932.26 = 128,335.32/x
  3. Step 3: Cross multiply
    286,149.24x = 428,932.26 × 128,335.32
  4. Step 4: Simplify right side
    286,149.24x = 55,047,158,845.42
  5. Step 5: Solve for x
    x = 55,047,158,845.42/286,149.24
  6. Step 6: Final answer
    x = 192,372.20

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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.