Home / 212,001.30-317,804.25-71,661.78

Finding the Fourth Proportional to 212,001.30, 317,804.25 and 71,661.78

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Solution

The fourth proportional to 212,001.30, 317,804.25 and 71,661.78 is: 107,425.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,001.30 : 317,804.25 = 71,661.78 : x
  2. Step 2: Convert to fraction form
    212,001.30/317,804.25 = 71,661.78/x
  3. Step 3: Cross multiply
    212,001.30x = 317,804.25 × 71,661.78
  4. Step 4: Simplify right side
    212,001.30x = 22,774,418,246.57
  5. Step 5: Solve for x
    x = 22,774,418,246.57/212,001.30
  6. Step 6: Final answer
    x = 107,425.84

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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.