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Finding the Fourth Proportional to 259,271.60, 388,907.40 and 231,715.40

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Solution

The fourth proportional to 259,271.60, 388,907.40 and 231,715.40 is: 347,573.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,271.60 : 388,907.40 = 231,715.40 : x
  2. Step 2: Convert to fraction form
    259,271.60/388,907.40 = 231,715.40/x
  3. Step 3: Cross multiply
    259,271.60x = 388,907.40 × 231,715.40
  4. Step 4: Simplify right side
    259,271.60x = 90,115,833,753.96
  5. Step 5: Solve for x
    x = 90,115,833,753.96/259,271.60
  6. Step 6: Final answer
    x = 347,573.10

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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.