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Finding the Fourth Proportional to 302,172.90, 453,287.79 and 88,940.94

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Solution

The fourth proportional to 302,172.90, 453,287.79 and 88,940.94 is: 133,419.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    302,172.90 : 453,287.79 = 88,940.94 : x
  2. Step 2: Convert to fraction form
    302,172.90/453,287.79 = 88,940.94/x
  3. Step 3: Cross multiply
    302,172.90x = 453,287.79 × 88,940.94
  4. Step 4: Simplify right side
    302,172.90x = 40,315,842,133.12
  5. Step 5: Solve for x
    x = 40,315,842,133.12/302,172.90
  6. Step 6: Final answer
    x = 133,419.78

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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.