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Finding the Fourth Proportional to 300,007.40, 449,492.70 and 247,130.60

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Solution

The fourth proportional to 300,007.40, 449,492.70 and 247,130.60 is: 370,268.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    300,007.40 : 449,492.70 = 247,130.60 : x
  2. Step 2: Convert to fraction form
    300,007.40/449,492.70 = 247,130.60/x
  3. Step 3: Cross multiply
    300,007.40x = 449,492.70 × 247,130.60
  4. Step 4: Simplify right side
    300,007.40x = 111,083,400,646.62
  5. Step 5: Solve for x
    x = 111,083,400,646.62/300,007.40
  6. Step 6: Final answer
    x = 370,268.87

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1.5x scale

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.