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Finding the Fourth Proportional to 191,431.85, 287,188.80 and 58,322.84

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Solution

The fourth proportional to 191,431.85, 287,188.80 and 58,322.84 is: 87,496.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,431.85 : 287,188.80 = 58,322.84 : x
  2. Step 2: Convert to fraction form
    191,431.85/287,188.80 = 58,322.84/x
  3. Step 3: Cross multiply
    191,431.85x = 287,188.80 × 58,322.84
  4. Step 4: Simplify right side
    191,431.85x = 16,749,664,996.25
  5. Step 5: Solve for x
    x = 16,749,664,996.25/191,431.85
  6. Step 6: Final answer
    x = 87,496.75

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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.