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Finding the Fourth Proportional to 377,989.22, 521,600.36 and 208,223.34

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Solution

The fourth proportional to 377,989.22, 521,600.36 and 208,223.34 is: 287,334.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    377,989.22 : 521,600.36 = 208,223.34 : x
  2. Step 2: Convert to fraction form
    377,989.22/521,600.36 = 208,223.34/x
  3. Step 3: Cross multiply
    377,989.22x = 521,600.36 × 208,223.34
  4. Step 4: Simplify right side
    377,989.22x = 108,609,368,063.29
  5. Step 5: Solve for x
    x = 108,609,368,063.29/377,989.22
  6. Step 6: Final answer
    x = 287,334.57

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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.