Home / 251,515.53-347,084.19-138,338.28

Finding the Fourth Proportional to 251,515.53, 347,084.19 and 138,338.28

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Solution

The fourth proportional to 251,515.53, 347,084.19 and 138,338.28 is: 190,902.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,515.53 : 347,084.19 = 138,338.28 : x
  2. Step 2: Convert to fraction form
    251,515.53/347,084.19 = 138,338.28/x
  3. Step 3: Cross multiply
    251,515.53x = 347,084.19 × 138,338.28
  4. Step 4: Simplify right side
    251,515.53x = 48,015,029,859.79
  5. Step 5: Solve for x
    x = 48,015,029,859.79/251,515.53
  6. Step 6: Final answer
    x = 190,902.84

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1.5x scale

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.