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Finding the Fourth Proportional to 272,172.60, 408,210.30 and 172,153.80

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Solution

The fourth proportional to 272,172.60, 408,210.30 and 172,153.80 is: 258,199.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,172.60 : 408,210.30 = 172,153.80 : x
  2. Step 2: Convert to fraction form
    272,172.60/408,210.30 = 172,153.80/x
  3. Step 3: Cross multiply
    272,172.60x = 408,210.30 × 172,153.80
  4. Step 4: Simplify right side
    272,172.60x = 70,274,954,344.14
  5. Step 5: Solve for x
    x = 70,274,954,344.14/272,172.60
  6. Step 6: Final answer
    x = 258,199.96

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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.