Home / 378,789.40-522,256.70-242,599.56

Finding the Fourth Proportional to 378,789.40, 522,256.70 and 242,599.56

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Solution

The fourth proportional to 378,789.40, 522,256.70 and 242,599.56 is: 334,484.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,789.40 : 522,256.70 = 242,599.56 : x
  2. Step 2: Convert to fraction form
    378,789.40/522,256.70 = 242,599.56/x
  3. Step 3: Cross multiply
    378,789.40x = 522,256.70 × 242,599.56
  4. Step 4: Simplify right side
    378,789.40x = 126,699,245,627.05
  5. Step 5: Solve for x
    x = 126,699,245,627.05/378,789.40
  6. Step 6: Final answer
    x = 334,484.67

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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.