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Finding the Fourth Proportional to 391,303.75, 585,647.77 and 222,778.84

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Solution

The fourth proportional to 391,303.75, 585,647.77 and 222,778.84 is: 333,423.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,303.75 : 585,647.77 = 222,778.84 : x
  2. Step 2: Convert to fraction form
    391,303.75/585,647.77 = 222,778.84/x
  3. Step 3: Cross multiply
    391,303.75x = 585,647.77 × 222,778.84
  4. Step 4: Simplify right side
    391,303.75x = 130,469,927,920.95
  5. Step 5: Solve for x
    x = 130,469,927,920.95/391,303.75
  6. Step 6: Final answer
    x = 333,423.66

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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.