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Finding the Fourth Proportional to 248,408, 342,803.04 and 135,224

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Solution

The fourth proportional to 248,408, 342,803.04 and 135,224 is: 186,609.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    248,408 : 342,803.04 = 135,224 : x
  2. Step 2: Convert to fraction form
    248,408/342,803.04 = 135,224/x
  3. Step 3: Cross multiply
    248,408x = 342,803.04 × 135,224
  4. Step 4: Simplify right side
    248,408x = 46,355,198,280.96
  5. Step 5: Solve for x
    x = 46,355,198,280.96/248,408
  6. Step 6: Final answer
    x = 186,609.12

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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.