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Finding the Fourth Proportional to 408,847.40, 612,104.70 and 362,191.40

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Solution

The fourth proportional to 408,847.40, 612,104.70 and 362,191.40 is: 542,253.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    408,847.40 : 612,104.70 = 362,191.40 : x
  2. Step 2: Convert to fraction form
    408,847.40/612,104.70 = 362,191.40/x
  3. Step 3: Cross multiply
    408,847.40x = 612,104.70 × 362,191.40
  4. Step 4: Simplify right side
    408,847.40x = 221,699,058,239.58
  5. Step 5: Solve for x
    x = 221,699,058,239.58/408,847.40
  6. Step 6: Final answer
    x = 542,253.80

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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.