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Finding the Fourth Proportional to 259,515.80, 388,812.90 and 160,904.60

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Solution

The fourth proportional to 259,515.80, 388,812.90 and 160,904.60 is: 241,071.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,515.80 : 388,812.90 = 160,904.60 : x
  2. Step 2: Convert to fraction form
    259,515.80/388,812.90 = 160,904.60/x
  3. Step 3: Cross multiply
    259,515.80x = 388,812.90 × 160,904.60
  4. Step 4: Simplify right side
    259,515.80x = 62,561,784,149.34
  5. Step 5: Solve for x
    x = 62,561,784,149.34/259,515.80
  6. Step 6: Final answer
    x = 241,071.20

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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.