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Finding the Fourth Proportional to 368,521.71, 551,896.74 and 210,270.39

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Solution

The fourth proportional to 368,521.71, 551,896.74 and 210,270.39 is: 314,900.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,521.71 : 551,896.74 = 210,270.39 : x
  2. Step 2: Convert to fraction form
    368,521.71/551,896.74 = 210,270.39/x
  3. Step 3: Cross multiply
    368,521.71x = 551,896.74 × 210,270.39
  4. Step 4: Simplify right side
    368,521.71x = 116,047,542,759.53
  5. Step 5: Solve for x
    x = 116,047,542,759.53/368,521.71
  6. Step 6: Final answer
    x = 314,900.15

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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.