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Finding the Fourth Proportional to 607,722.82, 911,628.56 and 208,360.21

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Solution

The fourth proportional to 607,722.82, 911,628.56 and 208,360.21 is: 312,555.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    607,722.82 : 911,628.56 = 208,360.21 : x
  2. Step 2: Convert to fraction form
    607,722.82/911,628.56 = 208,360.21/x
  3. Step 3: Cross multiply
    607,722.82x = 911,628.56 × 208,360.21
  4. Step 4: Simplify right side
    607,722.82x = 189,947,118,203.60
  5. Step 5: Solve for x
    x = 189,947,118,203.60/607,722.82
  6. Step 6: Final answer
    x = 312,555.51

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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.