Home / 260,456.10-389,906.55-155,220.90

Finding the Fourth Proportional to 260,456.10, 389,906.55 and 155,220.90

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Solution

The fourth proportional to 260,456.10, 389,906.55 and 155,220.90 is: 232,367.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,456.10 : 389,906.55 = 155,220.90 : x
  2. Step 2: Convert to fraction form
    260,456.10/389,906.55 = 155,220.90/x
  3. Step 3: Cross multiply
    260,456.10x = 389,906.55 × 155,220.90
  4. Step 4: Simplify right side
    260,456.10x = 60,521,645,606.90
  5. Step 5: Solve for x
    x = 60,521,645,606.90/260,456.10
  6. Step 6: Final answer
    x = 232,367.93

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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.