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Finding the Fourth Proportional to 303,438.80, 455,179.80 and 93,076.40

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Solution

The fourth proportional to 303,438.80, 455,179.80 and 93,076.40 is: 139,621.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,438.80 : 455,179.80 = 93,076.40 : x
  2. Step 2: Convert to fraction form
    303,438.80/455,179.80 = 93,076.40/x
  3. Step 3: Cross multiply
    303,438.80x = 455,179.80 × 93,076.40
  4. Step 4: Simplify right side
    303,438.80x = 42,366,497,136.72
  5. Step 5: Solve for x
    x = 42,366,497,136.72/303,438.80
  6. Step 6: Final answer
    x = 139,621.23

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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.