Home / 315,989.20-436,070.28-188,675.92

Finding the Fourth Proportional to 315,989.20, 436,070.28 and 188,675.92

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Solution

The fourth proportional to 315,989.20, 436,070.28 and 188,675.92 is: 260,375.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,989.20 : 436,070.28 = 188,675.92 : x
  2. Step 2: Convert to fraction form
    315,989.20/436,070.28 = 188,675.92/x
  3. Step 3: Cross multiply
    315,989.20x = 436,070.28 × 188,675.92
  4. Step 4: Simplify right side
    315,989.20x = 82,275,961,263.66
  5. Step 5: Solve for x
    x = 82,275,961,263.66/315,989.20
  6. Step 6: Final answer
    x = 260,375.86

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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.