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Finding the Fourth Proportional to 219,793.80, 330,419.70 and 190,925.40

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Solution

The fourth proportional to 219,793.80, 330,419.70 and 190,925.40 is: 287,021.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,793.80 : 330,419.70 = 190,925.40 : x
  2. Step 2: Convert to fraction form
    219,793.80/330,419.70 = 190,925.40/x
  3. Step 3: Cross multiply
    219,793.80x = 330,419.70 × 190,925.40
  4. Step 4: Simplify right side
    219,793.80x = 63,085,513,390.38
  5. Step 5: Solve for x
    x = 63,085,513,390.38/219,793.80
  6. Step 6: Final answer
    x = 287,021.35

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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.