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Finding the Fourth Proportional to 445,615.80, 668,412.60 and 130,075.44

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Solution

The fourth proportional to 445,615.80, 668,412.60 and 130,075.44 is: 195,109.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,615.80 : 668,412.60 = 130,075.44 : x
  2. Step 2: Convert to fraction form
    445,615.80/668,412.60 = 130,075.44/x
  3. Step 3: Cross multiply
    445,615.80x = 668,412.60 × 130,075.44
  4. Step 4: Simplify right side
    445,615.80x = 86,944,063,046.54
  5. Step 5: Solve for x
    x = 86,944,063,046.54/445,615.80
  6. Step 6: Final answer
    x = 195,109.92

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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.