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Finding the Fourth Proportional to 222,474.12, 307,019.18 and 126,978.84

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Solution

The fourth proportional to 222,474.12, 307,019.18 and 126,978.84 is: 175,233.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    222,474.12 : 307,019.18 = 126,978.84 : x
  2. Step 2: Convert to fraction form
    222,474.12/307,019.18 = 126,978.84/x
  3. Step 3: Cross multiply
    222,474.12x = 307,019.18 × 126,978.84
  4. Step 4: Simplify right side
    222,474.12x = 38,984,939,334.15
  5. Step 5: Solve for x
    x = 38,984,939,334.15/222,474.12
  6. Step 6: Final answer
    x = 175,233.59

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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.