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Finding the Fourth Proportional to 312,171.59, 430,796.79 and 168,931.64

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Solution

The fourth proportional to 312,171.59, 430,796.79 and 168,931.64 is: 233,125.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,171.59 : 430,796.79 = 168,931.64 : x
  2. Step 2: Convert to fraction form
    312,171.59/430,796.79 = 168,931.64/x
  3. Step 3: Cross multiply
    312,171.59x = 430,796.79 × 168,931.64
  4. Step 4: Simplify right side
    312,171.59x = 72,775,206,087.45
  5. Step 5: Solve for x
    x = 72,775,206,087.45/312,171.59
  6. Step 6: Final answer
    x = 233,125.65

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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.