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Finding the Fourth Proportional to 191,490.63, 287,235.94 and 51,245.61

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Solution

The fourth proportional to 191,490.63, 287,235.94 and 51,245.61 is: 76,868.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,490.63 : 287,235.94 = 51,245.61 : x
  2. Step 2: Convert to fraction form
    191,490.63/287,235.94 = 51,245.61/x
  3. Step 3: Cross multiply
    191,490.63x = 287,235.94 × 51,245.61
  4. Step 4: Simplify right side
    191,490.63x = 14,719,579,394.93
  5. Step 5: Solve for x
    x = 14,719,579,394.93/191,490.63
  6. Step 6: Final answer
    x = 76,868.41

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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.