Home / 250,363.80-345,386.10-221,712.60

Finding the Fourth Proportional to 250,363.80, 345,386.10 and 221,712.60

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Solution

The fourth proportional to 250,363.80, 345,386.10 and 221,712.60 is: 305,860.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    250,363.80 : 345,386.10 = 221,712.60 : x
  2. Step 2: Convert to fraction form
    250,363.80/345,386.10 = 221,712.60/x
  3. Step 3: Cross multiply
    250,363.80x = 345,386.10 × 221,712.60
  4. Step 4: Simplify right side
    250,363.80x = 76,576,450,234.86
  5. Step 5: Solve for x
    x = 76,576,450,234.86/250,363.80
  6. Step 6: Final answer
    x = 305,860.71

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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.