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Finding the Fourth Proportional to 311,904.14, 430,418 and 175,936.10

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Solution

The fourth proportional to 311,904.14, 430,418 and 175,936.10 is: 242,786.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,904.14 : 430,418 = 175,936.10 : x
  2. Step 2: Convert to fraction form
    311,904.14/430,418 = 175,936.10/x
  3. Step 3: Cross multiply
    311,904.14x = 430,418 × 175,936.10
  4. Step 4: Simplify right side
    311,904.14x = 75,726,064,289.80
  5. Step 5: Solve for x
    x = 75,726,064,289.80/311,904.14
  6. Step 6: Final answer
    x = 242,786.34

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1.5x scale

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.