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Finding the Fourth Proportional to 374,278.67, 561,640.34 and 137,787.42

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Solution

The fourth proportional to 374,278.67, 561,640.34 and 137,787.42 is: 206,762.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    374,278.67 : 561,640.34 = 137,787.42 : x
  2. Step 2: Convert to fraction form
    374,278.67/561,640.34 = 137,787.42/x
  3. Step 3: Cross multiply
    374,278.67x = 561,640.34 × 137,787.42
  4. Step 4: Simplify right side
    374,278.67x = 77,386,973,760.99
  5. Step 5: Solve for x
    x = 77,386,973,760.99/374,278.67
  6. Step 6: Final answer
    x = 206,762.98

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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.