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Finding the Fourth Proportional to 191,917.20, 287,767.80 and 73,592.40

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Solution

The fourth proportional to 191,917.20, 287,767.80 and 73,592.40 is: 110,347.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,917.20 : 287,767.80 = 73,592.40 : x
  2. Step 2: Convert to fraction form
    191,917.20/287,767.80 = 73,592.40/x
  3. Step 3: Cross multiply
    191,917.20x = 287,767.80 × 73,592.40
  4. Step 4: Simplify right side
    191,917.20x = 21,177,523,044.72
  5. Step 5: Solve for x
    x = 21,177,523,044.72/191,917.20
  6. Step 6: Final answer
    x = 110,347.19

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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.