Home / 285,650.32-428,512.72-105,711.24

Finding the Fourth Proportional to 285,650.32, 428,512.72 and 105,711.24

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Solution

The fourth proportional to 285,650.32, 428,512.72 and 105,711.24 is: 158,580.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,650.32 : 428,512.72 = 105,711.24 : x
  2. Step 2: Convert to fraction form
    285,650.32/428,512.72 = 105,711.24/x
  3. Step 3: Cross multiply
    285,650.32x = 428,512.72 × 105,711.24
  4. Step 4: Simplify right side
    285,650.32x = 45,298,610,986.97
  5. Step 5: Solve for x
    x = 45,298,610,986.97/285,650.32
  6. Step 6: Final answer
    x = 158,580.64

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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.