Home / 279,485.62-385,670.69-158,629.36

Finding the Fourth Proportional to 279,485.62, 385,670.69 and 158,629.36

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Solution

The fourth proportional to 279,485.62, 385,670.69 and 158,629.36 is: 218,897.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,485.62 : 385,670.69 = 158,629.36 : x
  2. Step 2: Convert to fraction form
    279,485.62/385,670.69 = 158,629.36/x
  3. Step 3: Cross multiply
    279,485.62x = 385,670.69 × 158,629.36
  4. Step 4: Simplify right side
    279,485.62x = 61,178,694,725.46
  5. Step 5: Solve for x
    x = 61,178,694,725.46/279,485.62
  6. Step 6: Final answer
    x = 218,897.47

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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.