Home / 285,918.45-428,336.30-190,861.98

Finding the Fourth Proportional to 285,918.45, 428,336.30 and 190,861.98

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Solution

The fourth proportional to 285,918.45, 428,336.30 and 190,861.98 is: 285,931.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,918.45 : 428,336.30 = 190,861.98 : x
  2. Step 2: Convert to fraction form
    285,918.45/428,336.30 = 190,861.98/x
  3. Step 3: Cross multiply
    285,918.45x = 428,336.30 × 190,861.98
  4. Step 4: Simplify right side
    285,918.45x = 81,753,114,323.87
  5. Step 5: Solve for x
    x = 81,753,114,323.87/285,918.45
  6. Step 6: Final answer
    x = 285,931.58

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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.