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Finding the Fourth Proportional to 303,435.68, 455,012.66 and 177,112.40

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Solution

The fourth proportional to 303,435.68, 455,012.66 and 177,112.40 is: 265,586.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,435.68 : 455,012.66 = 177,112.40 : x
  2. Step 2: Convert to fraction form
    303,435.68/455,012.66 = 177,112.40/x
  3. Step 3: Cross multiply
    303,435.68x = 455,012.66 × 177,112.40
  4. Step 4: Simplify right side
    303,435.68x = 80,588,384,242.98
  5. Step 5: Solve for x
    x = 80,588,384,242.98/303,435.68
  6. Step 6: Final answer
    x = 265,586.38

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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.