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Finding the Fourth Proportional to 248,389, 342,776.86 and 135,212.60

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Solution

The fourth proportional to 248,389, 342,776.86 and 135,212.60 is: 186,593.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    248,389 : 342,776.86 = 135,212.60 : x
  2. Step 2: Convert to fraction form
    248,389/342,776.86 = 135,212.60/x
  3. Step 3: Cross multiply
    248,389x = 342,776.86 × 135,212.60
  4. Step 4: Simplify right side
    248,389x = 46,347,750,460.44
  5. Step 5: Solve for x
    x = 46,347,750,460.44/248,389
  6. Step 6: Final answer
    x = 186,593.41

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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.