Home / 285,455.82-393,953.05-158,143.26

Finding the Fourth Proportional to 285,455.82, 393,953.05 and 158,143.26

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Solution

The fourth proportional to 285,455.82, 393,953.05 and 158,143.26 is: 218,251.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,455.82 : 393,953.05 = 158,143.26 : x
  2. Step 2: Convert to fraction form
    285,455.82/393,953.05 = 158,143.26/x
  3. Step 3: Cross multiply
    285,455.82x = 393,953.05 × 158,143.26
  4. Step 4: Simplify right side
    285,455.82x = 62,301,019,613.94
  5. Step 5: Solve for x
    x = 62,301,019,613.94/285,455.82
  6. Step 6: Final answer
    x = 218,251.01

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.