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Finding the Fourth Proportional to 408,605.18, 612,775.80 and 148,905.77

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Solution

The fourth proportional to 408,605.18, 612,775.80 and 148,905.77 is: 223,310.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    408,605.18 : 612,775.80 = 148,905.77 : x
  2. Step 2: Convert to fraction form
    408,605.18/612,775.80 = 148,905.77/x
  3. Step 3: Cross multiply
    408,605.18x = 612,775.80 × 148,905.77
  4. Step 4: Simplify right side
    408,605.18x = 91,245,849,272.49
  5. Step 5: Solve for x
    x = 91,245,849,272.49/408,605.18
  6. Step 6: Final answer
    x = 223,310.56

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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.