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Finding the Fourth Proportional to 352,457.80, 486,390.12 and 191,311.44

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Solution

The fourth proportional to 352,457.80, 486,390.12 and 191,311.44 is: 264,008.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,457.80 : 486,390.12 = 191,311.44 : x
  2. Step 2: Convert to fraction form
    352,457.80/486,390.12 = 191,311.44/x
  3. Step 3: Cross multiply
    352,457.80x = 486,390.12 × 191,311.44
  4. Step 4: Simplify right side
    352,457.80x = 93,051,994,258.97
  5. Step 5: Solve for x
    x = 93,051,994,258.97/352,457.80
  6. Step 6: Final answer
    x = 264,008.89

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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.