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Finding the Fourth Proportional to 209,492, 314,287.20 and 69,250.60

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Solution

The fourth proportional to 209,492, 314,287.20 and 69,250.60 is: 103,892.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,492 : 314,287.20 = 69,250.60 : x
  2. Step 2: Convert to fraction form
    209,492/314,287.20 = 69,250.60/x
  3. Step 3: Cross multiply
    209,492x = 314,287.20 × 69,250.60
  4. Step 4: Simplify right side
    209,492x = 21,764,577,172.32
  5. Step 5: Solve for x
    x = 21,764,577,172.32/209,492
  6. Step 6: Final answer
    x = 103,892.16

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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.