Home / 389,879.32-538,050.18-228,857.80

Finding the Fourth Proportional to 389,879.32, 538,050.18 and 228,857.80

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Solution

The fourth proportional to 389,879.32, 538,050.18 and 228,857.80 is: 315,833.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,879.32 : 538,050.18 = 228,857.80 : x
  2. Step 2: Convert to fraction form
    389,879.32/538,050.18 = 228,857.80/x
  3. Step 3: Cross multiply
    389,879.32x = 538,050.18 × 228,857.80
  4. Step 4: Simplify right side
    389,879.32x = 123,136,980,484.40
  5. Step 5: Solve for x
    x = 123,136,980,484.40/389,879.32
  6. Step 6: Final answer
    x = 315,833.58

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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.