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Finding the Fourth Proportional to 408,829.40, 612,077.70 and 362,173.40

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Solution

The fourth proportional to 408,829.40, 612,077.70 and 362,173.40 is: 542,226.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    408,829.40 : 612,077.70 = 362,173.40 : x
  2. Step 2: Convert to fraction form
    408,829.40/612,077.70 = 362,173.40/x
  3. Step 3: Cross multiply
    408,829.40x = 612,077.70 × 362,173.40
  4. Step 4: Simplify right side
    408,829.40x = 221,678,261,673.18
  5. Step 5: Solve for x
    x = 221,678,261,673.18/408,829.40
  6. Step 6: Final answer
    x = 542,226.81

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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.