Home / 285,764.22-428,669.64-143,536.32

Finding the Fourth Proportional to 285,764.22, 428,669.64 and 143,536.32

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Solution

The fourth proportional to 285,764.22, 428,669.64 and 143,536.32 is: 215,316.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,764.22 : 428,669.64 = 143,536.32 : x
  2. Step 2: Convert to fraction form
    285,764.22/428,669.64 = 143,536.32/x
  3. Step 3: Cross multiply
    285,764.22x = 428,669.64 × 143,536.32
  4. Step 4: Simplify right side
    285,764.22x = 61,529,662,621.32
  5. Step 5: Solve for x
    x = 61,529,662,621.32/285,764.22
  6. Step 6: Final answer
    x = 215,316.19

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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.