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Finding the Fourth Proportional to 408,610.05, 612,783.18 and 148,910.69

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Solution

The fourth proportional to 408,610.05, 612,783.18 and 148,910.69 is: 223,317.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    408,610.05 : 612,783.18 = 148,910.69 : x
  2. Step 2: Convert to fraction form
    408,610.05/612,783.18 = 148,910.69/x
  3. Step 3: Cross multiply
    408,610.05x = 612,783.18 × 148,910.69
  4. Step 4: Simplify right side
    408,610.05x = 91,249,963,090.28
  5. Step 5: Solve for x
    x = 91,249,963,090.28/408,610.05
  6. Step 6: Final answer
    x = 223,317.96

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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.