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Finding the Fourth Proportional to 219,637.80, 329,456.70 and 53,425.80

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Solution

The fourth proportional to 219,637.80, 329,456.70 and 53,425.80 is: 80,138.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,637.80 : 329,456.70 = 53,425.80 : x
  2. Step 2: Convert to fraction form
    219,637.80/329,456.70 = 53,425.80/x
  3. Step 3: Cross multiply
    219,637.80x = 329,456.70 × 53,425.80
  4. Step 4: Simplify right side
    219,637.80x = 17,601,487,762.86
  5. Step 5: Solve for x
    x = 17,601,487,762.86/219,637.80
  6. Step 6: Final answer
    x = 80,138.70

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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.