Home / 285,697.24-428,626.10-105,779.96

Finding the Fourth Proportional to 285,697.24, 428,626.10 and 105,779.96

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Solution

The fourth proportional to 285,697.24, 428,626.10 and 105,779.96 is: 158,699.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,697.24 : 428,626.10 = 105,779.96 : x
  2. Step 2: Convert to fraction form
    285,697.24/428,626.10 = 105,779.96/x
  3. Step 3: Cross multiply
    285,697.24x = 428,626.10 × 105,779.96
  4. Step 4: Simplify right side
    285,697.24x = 45,340,051,712.96
  5. Step 5: Solve for x
    x = 45,340,051,712.96/285,697.24
  6. Step 6: Final answer
    x = 158,699.65

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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.