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Finding the Fourth Proportional to 303,679.60, 419,129.12 and 176,429

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Solution

The fourth proportional to 303,679.60, 419,129.12 and 176,429 is: 243,501.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,679.60 : 419,129.12 = 176,429 : x
  2. Step 2: Convert to fraction form
    303,679.60/419,129.12 = 176,429/x
  3. Step 3: Cross multiply
    303,679.60x = 419,129.12 × 176,429
  4. Step 4: Simplify right side
    303,679.60x = 73,946,531,512.48
  5. Step 5: Solve for x
    x = 73,946,531,512.48/303,679.60
  6. Step 6: Final answer
    x = 243,501.81

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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.