Home / 268,840.08-403,320.24-81,866.16

Finding the Fourth Proportional to 268,840.08, 403,320.24 and 81,866.16

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Solution

The fourth proportional to 268,840.08, 403,320.24 and 81,866.16 is: 122,817.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,840.08 : 403,320.24 = 81,866.16 : x
  2. Step 2: Convert to fraction form
    268,840.08/403,320.24 = 81,866.16/x
  3. Step 3: Cross multiply
    268,840.08x = 403,320.24 × 81,866.16
  4. Step 4: Simplify right side
    268,840.08x = 33,018,279,299.08
  5. Step 5: Solve for x
    x = 33,018,279,299.08/268,840.08
  6. Step 6: Final answer
    x = 122,817.55

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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.