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Finding the Fourth Proportional to 305,693.22, 421,854.30 and 167,870.64

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Solution

The fourth proportional to 305,693.22, 421,854.30 and 167,870.64 is: 231,660.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,693.22 : 421,854.30 = 167,870.64 : x
  2. Step 2: Convert to fraction form
    305,693.22/421,854.30 = 167,870.64/x
  3. Step 3: Cross multiply
    305,693.22x = 421,854.30 × 167,870.64
  4. Step 4: Simplify right side
    305,693.22x = 70,816,951,327.75
  5. Step 5: Solve for x
    x = 70,816,951,327.75/305,693.22
  6. Step 6: Final answer
    x = 231,660.20

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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.