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Finding the Fourth Proportional to 374,338.50, 561,170.79 and 137,630.58

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Solution

The fourth proportional to 374,338.50, 561,170.79 and 137,630.58 is: 206,321.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    374,338.50 : 561,170.79 = 137,630.58 : x
  2. Step 2: Convert to fraction form
    374,338.50/561,170.79 = 137,630.58/x
  3. Step 3: Cross multiply
    374,338.50x = 561,170.79 × 137,630.58
  4. Step 4: Simplify right side
    374,338.50x = 77,234,261,306.76
  5. Step 5: Solve for x
    x = 77,234,261,306.76/374,338.50
  6. Step 6: Final answer
    x = 206,321.98

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1.5x scale

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.