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Finding the Fourth Proportional to 451,431.52, 622,971.52 and 247,478.73

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Solution

The fourth proportional to 451,431.52, 622,971.52 and 247,478.73 is: 341,518.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    451,431.52 : 622,971.52 = 247,478.73 : x
  2. Step 2: Convert to fraction form
    451,431.52/622,971.52 = 247,478.73/x
  3. Step 3: Cross multiply
    451,431.52x = 622,971.52 × 247,478.73
  4. Step 4: Simplify right side
    451,431.52x = 154,172,201,534.50
  5. Step 5: Solve for x
    x = 154,172,201,534.50/451,431.52
  6. Step 6: Final answer
    x = 341,518.47

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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.