Home / 312,444.21-431,172.34-169,203.81

Finding the Fourth Proportional to 312,444.21, 431,172.34 and 169,203.81

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Solution

The fourth proportional to 312,444.21, 431,172.34 and 169,203.81 is: 233,500.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,444.21 : 431,172.34 = 169,203.81 : x
  2. Step 2: Convert to fraction form
    312,444.21/431,172.34 = 169,203.81/x
  3. Step 3: Cross multiply
    312,444.21x = 431,172.34 × 169,203.81
  4. Step 4: Simplify right side
    312,444.21x = 72,956,002,694.62
  5. Step 5: Solve for x
    x = 72,956,002,694.62/312,444.21
  6. Step 6: Final answer
    x = 233,500.90

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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.