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Finding the Fourth Proportional to 260,338.89, 359,300.94 and 145,623.90

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Solution

The fourth proportional to 260,338.89, 359,300.94 and 145,623.90 is: 200,979.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,338.89 : 359,300.94 = 145,623.90 : x
  2. Step 2: Convert to fraction form
    260,338.89/359,300.94 = 145,623.90/x
  3. Step 3: Cross multiply
    260,338.89x = 359,300.94 × 145,623.90
  4. Step 4: Simplify right side
    260,338.89x = 52,322,804,356.79
  5. Step 5: Solve for x
    x = 52,322,804,356.79/260,338.89
  6. Step 6: Final answer
    x = 200,979.60

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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.