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Finding the Fourth Proportional to 445,610.40, 668,512.80 and 130,041.60

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Solution

The fourth proportional to 445,610.40, 668,512.80 and 130,041.60 is: 195,090.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,610.40 : 668,512.80 = 130,041.60 : x
  2. Step 2: Convert to fraction form
    445,610.40/668,512.80 = 130,041.60/x
  3. Step 3: Cross multiply
    445,610.40x = 668,512.80 × 130,041.60
  4. Step 4: Simplify right side
    445,610.40x = 86,934,474,132.48
  5. Step 5: Solve for x
    x = 86,934,474,132.48/445,610.40
  6. Step 6: Final answer
    x = 195,090.77

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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.