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Finding the Fourth Proportional to 219,092.80, 328,898.40 and 124,398.40

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Solution

The fourth proportional to 219,092.80, 328,898.40 and 124,398.40 is: 186,744.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,092.80 : 328,898.40 = 124,398.40 : x
  2. Step 2: Convert to fraction form
    219,092.80/328,898.40 = 124,398.40/x
  3. Step 3: Cross multiply
    219,092.80x = 328,898.40 × 124,398.40
  4. Step 4: Simplify right side
    219,092.80x = 40,914,434,722.56
  5. Step 5: Solve for x
    x = 40,914,434,722.56/219,092.80
  6. Step 6: Final answer
    x = 186,744.77

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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.