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Finding the Fourth Proportional to 260,092.40, 389,555.40 and 213,436.40

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Solution

The fourth proportional to 260,092.40, 389,555.40 and 213,436.40 is: 319,676.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,092.40 : 389,555.40 = 213,436.40 : x
  2. Step 2: Convert to fraction form
    260,092.40/389,555.40 = 213,436.40/x
  3. Step 3: Cross multiply
    260,092.40x = 389,555.40 × 213,436.40
  4. Step 4: Simplify right side
    260,092.40x = 83,145,302,176.56
  5. Step 5: Solve for x
    x = 83,145,302,176.56/260,092.40
  6. Step 6: Final answer
    x = 319,676.02

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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.