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Finding the Fourth Proportional to 312,574.12, 431,350.86 and 169,333.72

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Solution

The fourth proportional to 312,574.12, 431,350.86 and 169,333.72 is: 233,679.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,574.12 : 431,350.86 = 169,333.72 : x
  2. Step 2: Convert to fraction form
    312,574.12/431,350.86 = 169,333.72/x
  3. Step 3: Cross multiply
    312,574.12x = 431,350.86 × 169,333.72
  4. Step 4: Simplify right side
    312,574.12x = 73,042,245,749.00
  5. Step 5: Solve for x
    x = 73,042,245,749.00/312,574.12
  6. Step 6: Final answer
    x = 233,679.76

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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.