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Finding the Fourth Proportional to 260,365.08, 390,043.25 and 147,704.51

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Solution

The fourth proportional to 260,365.08, 390,043.25 and 147,704.51 is: 221,270.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,365.08 : 390,043.25 = 147,704.51 : x
  2. Step 2: Convert to fraction form
    260,365.08/390,043.25 = 147,704.51/x
  3. Step 3: Cross multiply
    260,365.08x = 390,043.25 × 147,704.51
  4. Step 4: Simplify right side
    260,365.08x = 57,611,147,910.54
  5. Step 5: Solve for x
    x = 57,611,147,910.54/260,365.08
  6. Step 6: Final answer
    x = 221,270.64

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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.