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Finding the Fourth Proportional to 408,549.83, 612,829.06 and 124,286.67

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Solution

The fourth proportional to 408,549.83, 612,829.06 and 124,286.67 is: 186,431.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    408,549.83 : 612,829.06 = 124,286.67 : x
  2. Step 2: Convert to fraction form
    408,549.83/612,829.06 = 124,286.67/x
  3. Step 3: Cross multiply
    408,549.83x = 612,829.06 × 124,286.67
  4. Step 4: Simplify right side
    408,549.83x = 76,166,482,835.91
  5. Step 5: Solve for x
    x = 76,166,482,835.91/408,549.83
  6. Step 6: Final answer
    x = 186,431.32

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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.