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Finding the Fourth Proportional to 245,760.19, 368,729.04 and 85,859.73

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Solution

The fourth proportional to 245,760.19, 368,729.04 and 85,859.73 is: 128,820.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,760.19 : 368,729.04 = 85,859.73 : x
  2. Step 2: Convert to fraction form
    245,760.19/368,729.04 = 85,859.73/x
  3. Step 3: Cross multiply
    245,760.19x = 368,729.04 × 85,859.73
  4. Step 4: Simplify right side
    245,760.19x = 31,658,975,388.26
  5. Step 5: Solve for x
    x = 31,658,975,388.26/245,760.19
  6. Step 6: Final answer
    x = 128,820.60

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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.