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Finding the Fourth Proportional to 279,181.37, 385,338.71 and 158,393.36

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Solution

The fourth proportional to 279,181.37, 385,338.71 and 158,393.36 is: 218,621.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,181.37 : 385,338.71 = 158,393.36 : x
  2. Step 2: Convert to fraction form
    279,181.37/385,338.71 = 158,393.36/x
  3. Step 3: Cross multiply
    279,181.37x = 385,338.71 × 158,393.36
  4. Step 4: Simplify right side
    279,181.37x = 61,035,091,484.26
  5. Step 5: Solve for x
    x = 61,035,091,484.26/279,181.37
  6. Step 6: Final answer
    x = 218,621.65

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1.5x scale

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.