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Finding the Fourth Proportional to 354,622.73, 489,377.70 and 193,477.28

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Solution

The fourth proportional to 354,622.73, 489,377.70 and 193,477.28 is: 266,997.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,622.73 : 489,377.70 = 193,477.28 : x
  2. Step 2: Convert to fraction form
    354,622.73/489,377.70 = 193,477.28/x
  3. Step 3: Cross multiply
    354,622.73x = 489,377.70 × 193,477.28
  4. Step 4: Simplify right side
    354,622.73x = 94,683,463,841.77
  5. Step 5: Solve for x
    x = 94,683,463,841.77/354,622.73
  6. Step 6: Final answer
    x = 266,997.73

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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.