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Finding the Fourth Proportional to 245,382.90, 368,074.44 and 76,916.34

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Solution

The fourth proportional to 245,382.90, 368,074.44 and 76,916.34 is: 115,374.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,382.90 : 368,074.44 = 76,916.34 : x
  2. Step 2: Convert to fraction form
    245,382.90/368,074.44 = 76,916.34/x
  3. Step 3: Cross multiply
    245,382.90x = 368,074.44 × 76,916.34
  4. Step 4: Simplify right side
    245,382.90x = 28,310,938,772.35
  5. Step 5: Solve for x
    x = 28,310,938,772.35/245,382.90
  6. Step 6: Final answer
    x = 115,374.54

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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.