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Finding the Fourth Proportional to 211,019.60, 316,579.76 and 68,865.14

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Solution

The fourth proportional to 211,019.60, 316,579.76 and 68,865.14 is: 103,314.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,019.60 : 316,579.76 = 68,865.14 : x
  2. Step 2: Convert to fraction form
    211,019.60/316,579.76 = 68,865.14/x
  3. Step 3: Cross multiply
    211,019.60x = 316,579.76 × 68,865.14
  4. Step 4: Simplify right side
    211,019.60x = 21,801,307,566.34
  5. Step 5: Solve for x
    x = 21,801,307,566.34/211,019.60
  6. Step 6: Final answer
    x = 103,314.14

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.