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Finding the Fourth Proportional to 391,484.40, 586,284.29 and 222,591.57

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Solution

The fourth proportional to 391,484.40, 586,284.29 and 222,591.57 is: 333,351.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,484.40 : 586,284.29 = 222,591.57 : x
  2. Step 2: Convert to fraction form
    391,484.40/586,284.29 = 222,591.57/x
  3. Step 3: Cross multiply
    391,484.40x = 586,284.29 × 222,591.57
  4. Step 4: Simplify right side
    391,484.40x = 130,501,940,577.44
  5. Step 5: Solve for x
    x = 130,501,940,577.44/391,484.40
  6. Step 6: Final answer
    x = 333,351.57

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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.