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Finding the Fourth Proportional to 191,786.40, 287,722.80 and 58,672.80

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Solution

The fourth proportional to 191,786.40, 287,722.80 and 58,672.80 is: 88,022.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,786.40 : 287,722.80 = 58,672.80 : x
  2. Step 2: Convert to fraction form
    191,786.40/287,722.80 = 58,672.80/x
  3. Step 3: Cross multiply
    191,786.40x = 287,722.80 × 58,672.80
  4. Step 4: Simplify right side
    191,786.40x = 16,881,502,299.84
  5. Step 5: Solve for x
    x = 16,881,502,299.84/191,786.40
  6. Step 6: Final answer
    x = 88,022.42

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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.