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Finding the Fourth Proportional to 213,373.89, 317,796.82 and 212,342.64

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Solution

The fourth proportional to 213,373.89, 317,796.82 and 212,342.64 is: 316,260.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,373.89 : 317,796.82 = 212,342.64 : x
  2. Step 2: Convert to fraction form
    213,373.89/317,796.82 = 212,342.64/x
  3. Step 3: Cross multiply
    213,373.89x = 317,796.82 × 212,342.64
  4. Step 4: Simplify right side
    213,373.89x = 67,481,817,199.57
  5. Step 5: Solve for x
    x = 67,481,817,199.57/213,373.89
  6. Step 6: Final answer
    x = 316,260.90

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.