Home / 389,981.25-584,897.90-190,100.61

Finding the Fourth Proportional to 389,981.25, 584,897.90 and 190,100.61

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Solution

The fourth proportional to 389,981.25, 584,897.90 and 190,100.61 is: 285,114.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,981.25 : 584,897.90 = 190,100.61 : x
  2. Step 2: Convert to fraction form
    389,981.25/584,897.90 = 190,100.61/x
  3. Step 3: Cross multiply
    389,981.25x = 584,897.90 × 190,100.61
  4. Step 4: Simplify right side
    389,981.25x = 111,189,446,627.22
  5. Step 5: Solve for x
    x = 111,189,446,627.22/389,981.25
  6. Step 6: Final answer
    x = 285,114.85

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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.