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Finding the Fourth Proportional to 311,846.75, 430,348.14 and 168,606.45

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Solution

The fourth proportional to 311,846.75, 430,348.14 and 168,606.45 is: 232,676.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,846.75 : 430,348.14 = 168,606.45 : x
  2. Step 2: Convert to fraction form
    311,846.75/430,348.14 = 168,606.45/x
  3. Step 3: Cross multiply
    311,846.75x = 430,348.14 × 168,606.45
  4. Step 4: Simplify right side
    311,846.75x = 72,559,472,149.50
  5. Step 5: Solve for x
    x = 72,559,472,149.50/311,846.75
  6. Step 6: Final answer
    x = 232,676.70

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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.