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Finding the Fourth Proportional to 191,620.78, 287,433.36 and 73,298.14

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Solution

The fourth proportional to 191,620.78, 287,433.36 and 73,298.14 is: 109,948.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,620.78 : 287,433.36 = 73,298.14 : x
  2. Step 2: Convert to fraction form
    191,620.78/287,433.36 = 73,298.14/x
  3. Step 3: Cross multiply
    191,620.78x = 287,433.36 × 73,298.14
  4. Step 4: Simplify right side
    191,620.78x = 21,068,330,661.95
  5. Step 5: Solve for x
    x = 21,068,330,661.95/191,620.78
  6. Step 6: Final answer
    x = 109,948.05

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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.