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Finding the Fourth Proportional to 368,517.72, 551,890.74 and 210,266.40

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Solution

The fourth proportional to 368,517.72, 551,890.74 and 210,266.40 is: 314,894.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,517.72 : 551,890.74 = 210,266.40 : x
  2. Step 2: Convert to fraction form
    368,517.72/551,890.74 = 210,266.40/x
  3. Step 3: Cross multiply
    368,517.72x = 551,890.74 × 210,266.40
  4. Step 4: Simplify right side
    368,517.72x = 116,044,079,093.14
  5. Step 5: Solve for x
    x = 116,044,079,093.14/368,517.72
  6. Step 6: Final answer
    x = 314,894.16

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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.