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Finding the Fourth Proportional to 354,745.40, 532,118.10 and 168,121.40

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Solution

The fourth proportional to 354,745.40, 532,118.10 and 168,121.40 is: 252,182.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,745.40 : 532,118.10 = 168,121.40 : x
  2. Step 2: Convert to fraction form
    354,745.40/532,118.10 = 168,121.40/x
  3. Step 3: Cross multiply
    354,745.40x = 532,118.10 × 168,121.40
  4. Step 4: Simplify right side
    354,745.40x = 89,460,439,937.34
  5. Step 5: Solve for x
    x = 89,460,439,937.34/354,745.40
  6. Step 6: Final answer
    x = 252,182.10

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.