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Finding the Fourth Proportional to 248,298.26, 342,627.89 and 139,377.65

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Solution

The fourth proportional to 248,298.26, 342,627.89 and 139,377.65 is: 192,327.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    248,298.26 : 342,627.89 = 139,377.65 : x
  2. Step 2: Convert to fraction form
    248,298.26/342,627.89 = 139,377.65/x
  3. Step 3: Cross multiply
    248,298.26x = 342,627.89 × 139,377.65
  4. Step 4: Simplify right side
    248,298.26x = 47,754,667,722.63
  5. Step 5: Solve for x
    x = 47,754,667,722.63/248,298.26
  6. Step 6: Final answer
    x = 192,327.84

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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.