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Finding the Fourth Proportional to 219,385.50, 329,078.25 and 53,173.50

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Solution

The fourth proportional to 219,385.50, 329,078.25 and 53,173.50 is: 79,760.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,385.50 : 329,078.25 = 53,173.50 : x
  2. Step 2: Convert to fraction form
    219,385.50/329,078.25 = 53,173.50/x
  3. Step 3: Cross multiply
    219,385.50x = 329,078.25 × 53,173.50
  4. Step 4: Simplify right side
    219,385.50x = 17,498,242,326.38
  5. Step 5: Solve for x
    x = 17,498,242,326.38/219,385.50
  6. Step 6: Final answer
    x = 79,760.25

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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.