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Finding the Fourth Proportional to 620,729.73, 931,076.19 and 171,477.63

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Solution

The fourth proportional to 620,729.73, 931,076.19 and 171,477.63 is: 257,211.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,729.73 : 931,076.19 = 171,477.63 : x
  2. Step 2: Convert to fraction form
    620,729.73/931,076.19 = 171,477.63/x
  3. Step 3: Cross multiply
    620,729.73x = 931,076.19 × 171,477.63
  4. Step 4: Simplify right side
    620,729.73x = 159,658,738,410.63
  5. Step 5: Solve for x
    x = 159,658,738,410.63/620,729.73
  6. Step 6: Final answer
    x = 257,211.36

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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.