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Finding the Fourth Proportional to 303,635.40, 419,053.78 and 176,311.02

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Solution

The fourth proportional to 303,635.40, 419,053.78 and 176,311.02 is: 243,330.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,635.40 : 419,053.78 = 176,311.02 : x
  2. Step 2: Convert to fraction form
    303,635.40/419,053.78 = 176,311.02/x
  3. Step 3: Cross multiply
    303,635.40x = 419,053.78 × 176,311.02
  4. Step 4: Simplify right side
    303,635.40x = 73,883,799,386.66
  5. Step 5: Solve for x
    x = 73,883,799,386.66/303,635.40
  6. Step 6: Final answer
    x = 243,330.65

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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.