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Finding the Fourth Proportional to 234,286.40, 351,429.60 and 172,078.40

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Solution

The fourth proportional to 234,286.40, 351,429.60 and 172,078.40 is: 258,117.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    234,286.40 : 351,429.60 = 172,078.40 : x
  2. Step 2: Convert to fraction form
    234,286.40/351,429.60 = 172,078.40/x
  3. Step 3: Cross multiply
    234,286.40x = 351,429.60 × 172,078.40
  4. Step 4: Simplify right side
    234,286.40x = 60,473,443,280.64
  5. Step 5: Solve for x
    x = 60,473,443,280.64/234,286.40
  6. Step 6: Final answer
    x = 258,117.60

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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.