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Finding the Fourth Proportional to 207,880.60, 311,820.90 and 102,904.60

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Solution

The fourth proportional to 207,880.60, 311,820.90 and 102,904.60 is: 154,356.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,880.60 : 311,820.90 = 102,904.60 : x
  2. Step 2: Convert to fraction form
    207,880.60/311,820.90 = 102,904.60/x
  3. Step 3: Cross multiply
    207,880.60x = 311,820.90 × 102,904.60
  4. Step 4: Simplify right side
    207,880.60x = 32,087,804,986.14
  5. Step 5: Solve for x
    x = 32,087,804,986.14/207,880.60
  6. Step 6: Final answer
    x = 154,356.90

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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.