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Finding the Fourth Proportional to 300,013.79, 449,953.95 and 86,735.12

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Solution

The fourth proportional to 300,013.79, 449,953.95 and 86,735.12 is: 130,083.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    300,013.79 : 449,953.95 = 86,735.12 : x
  2. Step 2: Convert to fraction form
    300,013.79/449,953.95 = 86,735.12/x
  3. Step 3: Cross multiply
    300,013.79x = 449,953.95 × 86,735.12
  4. Step 4: Simplify right side
    300,013.79x = 39,026,809,847.72
  5. Step 5: Solve for x
    x = 39,026,809,847.72/300,013.79
  6. Step 6: Final answer
    x = 130,083.39

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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.