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Finding the Fourth Proportional to 191,489.94, 287,254.55 and 73,260.72

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Solution

The fourth proportional to 191,489.94, 287,254.55 and 73,260.72 is: 109,898.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,489.94 : 287,254.55 = 73,260.72 : x
  2. Step 2: Convert to fraction form
    191,489.94/287,254.55 = 73,260.72/x
  3. Step 3: Cross multiply
    191,489.94x = 287,254.55 × 73,260.72
  4. Step 4: Simplify right side
    191,489.94x = 21,044,475,339.43
  5. Step 5: Solve for x
    x = 21,044,475,339.43/191,489.94
  6. Step 6: Final answer
    x = 109,898.59

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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.