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Finding the Fourth Proportional to 312,171.32, 430,796.42 and 168,931.37

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Solution

The fourth proportional to 312,171.32, 430,796.42 and 168,931.37 is: 233,125.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,171.32 : 430,796.42 = 168,931.37 : x
  2. Step 2: Convert to fraction form
    312,171.32/430,796.42 = 168,931.37/x
  3. Step 3: Cross multiply
    312,171.32x = 430,796.42 × 168,931.37
  4. Step 4: Simplify right side
    312,171.32x = 72,775,029,421.70
  5. Step 5: Solve for x
    x = 72,775,029,421.70/312,171.32
  6. Step 6: Final answer
    x = 233,125.29

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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.