Home / 268,807.76-403,270.04-81,814.40

Finding the Fourth Proportional to 268,807.76, 403,270.04 and 81,814.40

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Solution

The fourth proportional to 268,807.76, 403,270.04 and 81,814.40 is: 122,739.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,807.76 : 403,270.04 = 81,814.40 : x
  2. Step 2: Convert to fraction form
    268,807.76/403,270.04 = 81,814.40/x
  3. Step 3: Cross multiply
    268,807.76x = 403,270.04 × 81,814.40
  4. Step 4: Simplify right side
    268,807.76x = 32,993,296,360.58
  5. Step 5: Solve for x
    x = 32,993,296,360.58/268,807.76
  6. Step 6: Final answer
    x = 122,739.37

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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.