Home / 212,503.57-318,678.78-70,322.59

Finding the Fourth Proportional to 212,503.57, 318,678.78 and 70,322.59

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Solution

The fourth proportional to 212,503.57, 318,678.78 and 70,322.59 is: 105,458.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,503.57 : 318,678.78 = 70,322.59 : x
  2. Step 2: Convert to fraction form
    212,503.57/318,678.78 = 70,322.59/x
  3. Step 3: Cross multiply
    212,503.57x = 318,678.78 × 70,322.59
  4. Step 4: Simplify right side
    212,503.57x = 22,410,317,187.64
  5. Step 5: Solve for x
    x = 22,410,317,187.64/212,503.57
  6. Step 6: Final answer
    x = 105,458.54

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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.