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Finding the Fourth Proportional to 448,876.26, 619,448.99 and 287,731.22

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Solution

The fourth proportional to 448,876.26, 619,448.99 and 287,731.22 is: 397,068.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    448,876.26 : 619,448.99 = 287,731.22 : x
  2. Step 2: Convert to fraction form
    448,876.26/619,448.99 = 287,731.22/x
  3. Step 3: Cross multiply
    448,876.26x = 619,448.99 × 287,731.22
  4. Step 4: Simplify right side
    448,876.26x = 178,234,809,084.57
  5. Step 5: Solve for x
    x = 178,234,809,084.57/448,876.26
  6. Step 6: Final answer
    x = 397,068.91

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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.