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Finding the Fourth Proportional to 376,511.12, 519,639.76 and 225,622.16

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Solution

The fourth proportional to 376,511.12, 519,639.76 and 225,622.16 is: 311,391.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    376,511.12 : 519,639.76 = 225,622.16 : x
  2. Step 2: Convert to fraction form
    376,511.12/519,639.76 = 225,622.16/x
  3. Step 3: Cross multiply
    376,511.12x = 519,639.76 × 225,622.16
  4. Step 4: Simplify right side
    376,511.12x = 117,242,245,073.08
  5. Step 5: Solve for x
    x = 117,242,245,073.08/376,511.12
  6. Step 6: Final answer
    x = 311,391.19

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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.