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Finding the Fourth Proportional to 408,519.47, 612,813.50 and 124,212.49

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Solution

The fourth proportional to 408,519.47, 612,813.50 and 124,212.49 is: 186,329.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    408,519.47 : 612,813.50 = 124,212.49 : x
  2. Step 2: Convert to fraction form
    408,519.47/612,813.50 = 124,212.49/x
  3. Step 3: Cross multiply
    408,519.47x = 612,813.50 × 124,212.49
  4. Step 4: Simplify right side
    408,519.47x = 76,119,087,676.55
  5. Step 5: Solve for x
    x = 76,119,087,676.55/408,519.47
  6. Step 6: Final answer
    x = 186,329.16

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1.5x scale

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.