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Finding the Fourth Proportional to 248,349.78, 342,722.64 and 135,173.34

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Solution

The fourth proportional to 248,349.78, 342,722.64 and 135,173.34 is: 186,539.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    248,349.78 : 342,722.64 = 135,173.34 : x
  2. Step 2: Convert to fraction form
    248,349.78/342,722.64 = 135,173.34/x
  3. Step 3: Cross multiply
    248,349.78x = 342,722.64 × 135,173.34
  4. Step 4: Simplify right side
    248,349.78x = 46,326,963,942.42
  5. Step 5: Solve for x
    x = 46,326,963,942.42/248,349.78
  6. Step 6: Final answer
    x = 186,539.18

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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.