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Finding the Fourth Proportional to 311,887.20, 430,404.03 and 168,646.89

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Solution

The fourth proportional to 311,887.20, 430,404.03 and 168,646.89 is: 232,732.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,887.20 : 430,404.03 = 168,646.89 : x
  2. Step 2: Convert to fraction form
    311,887.20/430,404.03 = 168,646.89/x
  3. Step 3: Cross multiply
    311,887.20x = 430,404.03 × 168,646.89
  4. Step 4: Simplify right side
    311,887.20x = 72,586,301,102.97
  5. Step 5: Solve for x
    x = 72,586,301,102.97/311,887.20
  6. Step 6: Final answer
    x = 232,732.54

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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.