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Finding the Fourth Proportional to 287,885.70, 397,294.29 and 158,823.54

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Solution

The fourth proportional to 287,885.70, 397,294.29 and 158,823.54 is: 219,183.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,885.70 : 397,294.29 = 158,823.54 : x
  2. Step 2: Convert to fraction form
    287,885.70/397,294.29 = 158,823.54/x
  3. Step 3: Cross multiply
    287,885.70x = 397,294.29 × 158,823.54
  4. Step 4: Simplify right side
    287,885.70x = 63,099,685,559.59
  5. Step 5: Solve for x
    x = 63,099,685,559.59/287,885.70
  6. Step 6: Final answer
    x = 219,183.12

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.