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Finding the Fourth Proportional to 219,773.80, 330,316.80 and 190,905.40

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Solution

The fourth proportional to 219,773.80, 330,316.80 and 190,905.40 is: 286,928.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,773.80 : 330,316.80 = 190,905.40 : x
  2. Step 2: Convert to fraction form
    219,773.80/330,316.80 = 190,905.40/x
  3. Step 3: Cross multiply
    219,773.80x = 330,316.80 × 190,905.40
  4. Step 4: Simplify right side
    219,773.80x = 63,059,260,830.72
  5. Step 5: Solve for x
    x = 63,059,260,830.72/219,773.80
  6. Step 6: Final answer
    x = 286,928.02

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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.