Home / 212,560.64-318,730.24-79,331.33

Finding the Fourth Proportional to 212,560.64, 318,730.24 and 79,331.33

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Solution

The fourth proportional to 212,560.64, 318,730.24 and 79,331.33 is: 118,955.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,560.64 : 318,730.24 = 79,331.33 : x
  2. Step 2: Convert to fraction form
    212,560.64/318,730.24 = 79,331.33/x
  3. Step 3: Cross multiply
    212,560.64x = 318,730.24 × 79,331.33
  4. Step 4: Simplify right side
    212,560.64x = 25,285,294,448.92
  5. Step 5: Solve for x
    x = 25,285,294,448.92/212,560.64
  6. Step 6: Final answer
    x = 118,955.67

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1.5x scale

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.