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Finding the Fourth Proportional to 451,028.06, 622,402.48 and 257,445.76

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Solution

The fourth proportional to 451,028.06, 622,402.48 and 257,445.76 is: 355,265.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    451,028.06 : 622,402.48 = 257,445.76 : x
  2. Step 2: Convert to fraction form
    451,028.06/622,402.48 = 257,445.76/x
  3. Step 3: Cross multiply
    451,028.06x = 622,402.48 × 257,445.76
  4. Step 4: Simplify right side
    451,028.06x = 160,234,879,422.29
  5. Step 5: Solve for x
    x = 160,234,879,422.29/451,028.06
  6. Step 6: Final answer
    x = 355,265.87

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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.