Home / 308,985.40-426,179.82-283,573.72

Finding the Fourth Proportional to 308,985.40, 426,179.82 and 283,573.72

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Solution

The fourth proportional to 308,985.40, 426,179.82 and 283,573.72 is: 391,129.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,985.40 : 426,179.82 = 283,573.72 : x
  2. Step 2: Convert to fraction form
    308,985.40/426,179.82 = 283,573.72/x
  3. Step 3: Cross multiply
    308,985.40x = 426,179.82 × 283,573.72
  4. Step 4: Simplify right side
    308,985.40x = 120,853,396,946.33
  5. Step 5: Solve for x
    x = 120,853,396,946.33/308,985.40
  6. Step 6: Final answer
    x = 391,129.80

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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.