Home / 213,622.40-320,405.78-55,863.02

Finding the Fourth Proportional to 213,622.40, 320,405.78 and 55,863.02

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Solution

The fourth proportional to 213,622.40, 320,405.78 and 55,863.02 is: 83,787.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,622.40 : 320,405.78 = 55,863.02 : x
  2. Step 2: Convert to fraction form
    213,622.40/320,405.78 = 55,863.02/x
  3. Step 3: Cross multiply
    213,622.40x = 320,405.78 × 55,863.02
  4. Step 4: Simplify right side
    213,622.40x = 17,898,834,496.26
  5. Step 5: Solve for x
    x = 17,898,834,496.26/213,622.40
  6. Step 6: Final answer
    x = 83,787.25

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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.