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Finding the Fourth Proportional to 219,614.60, 328,765.80 and 130,822.40

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Solution

The fourth proportional to 219,614.60, 328,765.80 and 130,822.40 is: 195,842.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,614.60 : 328,765.80 = 130,822.40 : x
  2. Step 2: Convert to fraction form
    219,614.60/328,765.80 = 130,822.40/x
  3. Step 3: Cross multiply
    219,614.60x = 328,765.80 × 130,822.40
  4. Step 4: Simplify right side
    219,614.60x = 43,009,930,993.92
  5. Step 5: Solve for x
    x = 43,009,930,993.92/219,614.60
  6. Step 6: Final answer
    x = 195,842.77

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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.