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Finding the Fourth Proportional to 391,924.33, 540,855.19 and 222,158.45

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Solution

The fourth proportional to 391,924.33, 540,855.19 and 222,158.45 is: 306,578.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,924.33 : 540,855.19 = 222,158.45 : x
  2. Step 2: Convert to fraction form
    391,924.33/540,855.19 = 222,158.45/x
  3. Step 3: Cross multiply
    391,924.33x = 540,855.19 × 222,158.45
  4. Step 4: Simplify right side
    391,924.33x = 120,155,552,314.69
  5. Step 5: Solve for x
    x = 120,155,552,314.69/391,924.33
  6. Step 6: Final answer
    x = 306,578.45

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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.