Home / 356,266.08-492,272.64-280,388.16

Finding the Fourth Proportional to 356,266.08, 492,272.64 and 280,388.16

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Solution

The fourth proportional to 356,266.08, 492,272.64 and 280,388.16 is: 387,427.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,266.08 : 492,272.64 = 280,388.16 : x
  2. Step 2: Convert to fraction form
    356,266.08/492,272.64 = 280,388.16/x
  3. Step 3: Cross multiply
    356,266.08x = 492,272.64 × 280,388.16
  4. Step 4: Simplify right side
    356,266.08x = 138,027,419,747.94
  5. Step 5: Solve for x
    x = 138,027,419,747.94/356,266.08
  6. Step 6: Final answer
    x = 387,427.90

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.