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Finding the Fourth Proportional to 303,399.64, 455,690.04 and 247,281.22

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Solution

The fourth proportional to 303,399.64, 455,690.04 and 247,281.22 is: 371,403.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,399.64 : 455,690.04 = 247,281.22 : x
  2. Step 2: Convert to fraction form
    303,399.64/455,690.04 = 247,281.22/x
  3. Step 3: Cross multiply
    303,399.64x = 455,690.04 × 247,281.22
  4. Step 4: Simplify right side
    303,399.64x = 112,683,589,033.05
  5. Step 5: Solve for x
    x = 112,683,589,033.05/303,399.64
  6. Step 6: Final answer
    x = 371,403.17

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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.