Home / 279,111.72-385,317.18-188,944.68

Finding the Fourth Proportional to 279,111.72, 385,317.18 and 188,944.68

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Solution

The fourth proportional to 279,111.72, 385,317.18 and 188,944.68 is: 260,840.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,111.72 : 385,317.18 = 188,944.68 : x
  2. Step 2: Convert to fraction form
    279,111.72/385,317.18 = 188,944.68/x
  3. Step 3: Cross multiply
    279,111.72x = 385,317.18 × 188,944.68
  4. Step 4: Simplify right side
    279,111.72x = 72,803,631,273.60
  5. Step 5: Solve for x
    x = 72,803,631,273.60/279,111.72
  6. Step 6: Final answer
    x = 260,840.47

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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.