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Finding the Fourth Proportional to 303,349.40, 418,619.40 and 167,384.60

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Solution

The fourth proportional to 303,349.40, 418,619.40 and 167,384.60 is: 230,989.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,349.40 : 418,619.40 = 167,384.60 : x
  2. Step 2: Convert to fraction form
    303,349.40/418,619.40 = 167,384.60/x
  3. Step 3: Cross multiply
    303,349.40x = 418,619.40 × 167,384.60
  4. Step 4: Simplify right side
    303,349.40x = 70,070,440,821.24
  5. Step 5: Solve for x
    x = 70,070,440,821.24/303,349.40
  6. Step 6: Final answer
    x = 230,989.22

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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.