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Finding the Fourth Proportional to 408,159.40, 612,239.10 and 404,222.80

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Solution

The fourth proportional to 408,159.40, 612,239.10 and 404,222.80 is: 606,334.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    408,159.40 : 612,239.10 = 404,222.80 : x
  2. Step 2: Convert to fraction form
    408,159.40/612,239.10 = 404,222.80/x
  3. Step 3: Cross multiply
    408,159.40x = 612,239.10 × 404,222.80
  4. Step 4: Simplify right side
    408,159.40x = 247,481,003,271.48
  5. Step 5: Solve for x
    x = 247,481,003,271.48/408,159.40
  6. Step 6: Final answer
    x = 606,334.20

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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.