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Finding the Fourth Proportional to 636,867.90, 955,311.60 and 163,542.78

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Solution

The fourth proportional to 636,867.90, 955,311.60 and 163,542.78 is: 245,316.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,867.90 : 955,311.60 = 163,542.78 : x
  2. Step 2: Convert to fraction form
    636,867.90/955,311.60 = 163,542.78/x
  3. Step 3: Cross multiply
    636,867.90x = 955,311.60 × 163,542.78
  4. Step 4: Simplify right side
    636,867.90x = 156,234,314,830.25
  5. Step 5: Solve for x
    x = 156,234,314,830.25/636,867.90
  6. Step 6: Final answer
    x = 245,316.67

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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.