Home / 285,376.20-428,092.58-105,508.81

Finding the Fourth Proportional to 285,376.20, 428,092.58 and 105,508.81

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Solution

The fourth proportional to 285,376.20, 428,092.58 and 105,508.81 is: 158,273.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,376.20 : 428,092.58 = 105,508.81 : x
  2. Step 2: Convert to fraction form
    285,376.20/428,092.58 = 105,508.81/x
  3. Step 3: Cross multiply
    285,376.20x = 428,092.58 × 105,508.81
  4. Step 4: Simplify right side
    285,376.20x = 45,167,538,685.63
  5. Step 5: Solve for x
    x = 45,167,538,685.63/285,376.20
  6. Step 6: Final answer
    x = 158,273.67

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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.