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Finding the Fourth Proportional to 552,381.12, 828,678.60 and 215,408.16

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Solution

The fourth proportional to 552,381.12, 828,678.60 and 215,408.16 is: 323,153.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    552,381.12 : 828,678.60 = 215,408.16 : x
  2. Step 2: Convert to fraction form
    552,381.12/828,678.60 = 215,408.16/x
  3. Step 3: Cross multiply
    552,381.12x = 828,678.60 × 215,408.16
  4. Step 4: Simplify right side
    552,381.12x = 178,504,132,457.38
  5. Step 5: Solve for x
    x = 178,504,132,457.38/552,381.12
  6. Step 6: Final answer
    x = 323,153.93

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.