Home / 643,188.80-964,921.80-216,767.36

Finding the Fourth Proportional to 643,188.80, 964,921.80 and 216,767.36

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Solution

The fourth proportional to 643,188.80, 964,921.80 and 216,767.36 is: 325,197.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,188.80 : 964,921.80 = 216,767.36 : x
  2. Step 2: Convert to fraction form
    643,188.80/964,921.80 = 216,767.36/x
  3. Step 3: Cross multiply
    643,188.80x = 964,921.80 × 216,767.36
  4. Step 4: Simplify right side
    643,188.80x = 209,163,551,192.45
  5. Step 5: Solve for x
    x = 209,163,551,192.45/643,188.80
  6. Step 6: Final answer
    x = 325,197.75

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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.