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Finding the Fourth Proportional to 272,436.80, 408,638.75 and 101,625.62

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Solution

The fourth proportional to 272,436.80, 408,638.75 and 101,625.62 is: 152,432.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,436.80 : 408,638.75 = 101,625.62 : x
  2. Step 2: Convert to fraction form
    272,436.80/408,638.75 = 101,625.62/x
  3. Step 3: Cross multiply
    272,436.80x = 408,638.75 × 101,625.62
  4. Step 4: Simplify right side
    272,436.80x = 41,528,163,773.45
  5. Step 5: Solve for x
    x = 41,528,163,773.45/272,436.80
  6. Step 6: Final answer
    x = 152,432.29

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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.