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Finding the Fourth Proportional to 311,720.54, 430,174.16 and 168,480.59

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Solution

The fourth proportional to 311,720.54, 430,174.16 and 168,480.59 is: 232,503.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,720.54 : 430,174.16 = 168,480.59 : x
  2. Step 2: Convert to fraction form
    311,720.54/430,174.16 = 168,480.59/x
  3. Step 3: Cross multiply
    311,720.54x = 430,174.16 × 168,480.59
  4. Step 4: Simplify right side
    311,720.54x = 72,475,995,716.06
  5. Step 5: Solve for x
    x = 72,475,995,716.06/311,720.54
  6. Step 6: Final answer
    x = 232,503.11

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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.