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Finding the Fourth Proportional to 219,637.60, 329,456.40 and 53,425.60

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Solution

The fourth proportional to 219,637.60, 329,456.40 and 53,425.60 is: 80,138.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,637.60 : 329,456.40 = 53,425.60 : x
  2. Step 2: Convert to fraction form
    219,637.60/329,456.40 = 53,425.60/x
  3. Step 3: Cross multiply
    219,637.60x = 329,456.40 × 53,425.60
  4. Step 4: Simplify right side
    219,637.60x = 17,601,405,843.84
  5. Step 5: Solve for x
    x = 17,601,405,843.84/219,637.60
  6. Step 6: Final answer
    x = 80,138.40

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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.