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Finding the Fourth Proportional to 281,804.87, 388,948.03 and 259,107.90

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Solution

The fourth proportional to 281,804.87, 388,948.03 and 259,107.90 is: 357,621.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,804.87 : 388,948.03 = 259,107.90 : x
  2. Step 2: Convert to fraction form
    281,804.87/388,948.03 = 259,107.90/x
  3. Step 3: Cross multiply
    281,804.87x = 388,948.03 × 259,107.90
  4. Step 4: Simplify right side
    281,804.87x = 100,779,505,156.11
  5. Step 5: Solve for x
    x = 100,779,505,156.11/281,804.87
  6. Step 6: Final answer
    x = 357,621.58

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.