Home / 213,564.72-320,325.18-55,772.64

Finding the Fourth Proportional to 213,564.72, 320,325.18 and 55,772.64

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Solution

The fourth proportional to 213,564.72, 320,325.18 and 55,772.64 is: 83,653.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,564.72 : 320,325.18 = 55,772.64 : x
  2. Step 2: Convert to fraction form
    213,564.72/320,325.18 = 55,772.64/x
  3. Step 3: Cross multiply
    213,564.72x = 320,325.18 × 55,772.64
  4. Step 4: Simplify right side
    213,564.72x = 17,865,380,947.08
  5. Step 5: Solve for x
    x = 17,865,380,947.08/213,564.72
  6. Step 6: Final answer
    x = 83,653.24

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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.