Home / 268,829.10-403,243.65-81,816.30

Finding the Fourth Proportional to 268,829.10, 403,243.65 and 81,816.30

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Solution

The fourth proportional to 268,829.10, 403,243.65 and 81,816.30 is: 122,724.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,829.10 : 403,243.65 = 81,816.30 : x
  2. Step 2: Convert to fraction form
    268,829.10/403,243.65 = 81,816.30/x
  3. Step 3: Cross multiply
    268,829.10x = 403,243.65 × 81,816.30
  4. Step 4: Simplify right side
    268,829.10x = 32,991,903,441.50
  5. Step 5: Solve for x
    x = 32,991,903,441.50/268,829.10
  6. Step 6: Final answer
    x = 122,724.45

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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.