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Finding the Fourth Proportional to 287,529, 396,792.74 and 158,472.12

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Solution

The fourth proportional to 287,529, 396,792.74 and 158,472.12 is: 218,693.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,529 : 396,792.74 = 158,472.12 : x
  2. Step 2: Convert to fraction form
    287,529/396,792.74 = 158,472.12/x
  3. Step 3: Cross multiply
    287,529x = 396,792.74 × 158,472.12
  4. Step 4: Simplify right side
    287,529x = 62,880,586,708.41
  5. Step 5: Solve for x
    x = 62,880,586,708.41/287,529
  6. Step 6: Final answer
    x = 218,693.02

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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.