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Finding the Fourth Proportional to 451,231.67, 622,716.86 and 257,670.92

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Solution

The fourth proportional to 451,231.67, 622,716.86 and 257,670.92 is: 355,595.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    451,231.67 : 622,716.86 = 257,670.92 : x
  2. Step 2: Convert to fraction form
    451,231.67/622,716.86 = 257,670.92/x
  3. Step 3: Cross multiply
    451,231.67x = 622,716.86 × 257,670.92
  4. Step 4: Simplify right side
    451,231.67x = 160,456,026,215.71
  5. Step 5: Solve for x
    x = 160,456,026,215.71/451,231.67
  6. Step 6: Final answer
    x = 355,595.67

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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.