Home / 252,431.90-378,904.60-126,162.74

Finding the Fourth Proportional to 252,431.90, 378,904.60 and 126,162.74

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Solution

The fourth proportional to 252,431.90, 378,904.60 and 126,162.74 is: 189,372.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    252,431.90 : 378,904.60 = 126,162.74 : x
  2. Step 2: Convert to fraction form
    252,431.90/378,904.60 = 126,162.74/x
  3. Step 3: Cross multiply
    252,431.90x = 378,904.60 × 126,162.74
  4. Step 4: Simplify right side
    252,431.90x = 47,803,642,534.60
  5. Step 5: Solve for x
    x = 47,803,642,534.60/252,431.90
  6. Step 6: Final answer
    x = 189,372.43

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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.