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Finding the Fourth Proportional to 260,379.35, 359,306.52 and 145,638.09

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Solution

The fourth proportional to 260,379.35, 359,306.52 and 145,638.09 is: 200,971.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,379.35 : 359,306.52 = 145,638.09 : x
  2. Step 2: Convert to fraction form
    260,379.35/359,306.52 = 145,638.09/x
  3. Step 3: Cross multiply
    260,379.35x = 359,306.52 × 145,638.09
  4. Step 4: Simplify right side
    260,379.35x = 52,328,715,297.35
  5. Step 5: Solve for x
    x = 52,328,715,297.35/260,379.35
  6. Step 6: Final answer
    x = 200,971.07

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1.5x scale

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.