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Finding the Fourth Proportional to 259,486.80, 388,615.80 and 175,928.40

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Solution

The fourth proportional to 259,486.80, 388,615.80 and 175,928.40 is: 263,476.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,486.80 : 388,615.80 = 175,928.40 : x
  2. Step 2: Convert to fraction form
    259,486.80/388,615.80 = 175,928.40/x
  3. Step 3: Cross multiply
    259,486.80x = 388,615.80 × 175,928.40
  4. Step 4: Simplify right side
    259,486.80x = 68,368,555,908.72
  5. Step 5: Solve for x
    x = 68,368,555,908.72/259,486.80
  6. Step 6: Final answer
    x = 263,476.05

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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.