Home / 353,079.30-487,130.82-200,105.47

Finding the Fourth Proportional to 353,079.30, 487,130.82 and 200,105.47

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Solution

The fourth proportional to 353,079.30, 487,130.82 and 200,105.47 is: 276,078.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,079.30 : 487,130.82 = 200,105.47 : x
  2. Step 2: Convert to fraction form
    353,079.30/487,130.82 = 200,105.47/x
  3. Step 3: Cross multiply
    353,079.30x = 487,130.82 × 200,105.47
  4. Step 4: Simplify right side
    353,079.30x = 97,477,541,687.59
  5. Step 5: Solve for x
    x = 97,477,541,687.59/353,079.30
  6. Step 6: Final answer
    x = 276,078.32

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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.