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Finding the Fourth Proportional to 303,358.40, 418,631.82 and 167,393.60

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Solution

The fourth proportional to 303,358.40, 418,631.82 and 167,393.60 is: 231,001.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,358.40 : 418,631.82 = 167,393.60 : x
  2. Step 2: Convert to fraction form
    303,358.40/418,631.82 = 167,393.60/x
  3. Step 3: Cross multiply
    303,358.40x = 418,631.82 × 167,393.60
  4. Step 4: Simplify right side
    303,358.40x = 70,076,287,424.35
  5. Step 5: Solve for x
    x = 70,076,287,424.35/303,358.40
  6. Step 6: Final answer
    x = 231,001.64

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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.