Home / 285,458.82-393,927.75-158,135.46

Finding the Fourth Proportional to 285,458.82, 393,927.75 and 158,135.46

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Solution

The fourth proportional to 285,458.82, 393,927.75 and 158,135.46 is: 218,223.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,458.82 : 393,927.75 = 158,135.46 : x
  2. Step 2: Convert to fraction form
    285,458.82/393,927.75 = 158,135.46/x
  3. Step 3: Cross multiply
    285,458.82x = 393,927.75 × 158,135.46
  4. Step 4: Simplify right side
    285,458.82x = 62,293,945,953.02
  5. Step 5: Solve for x
    x = 62,293,945,953.02/285,458.82
  6. Step 6: Final answer
    x = 218,223.93

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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.