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Finding the Fourth Proportional to 313,879.32, 433,158.39 and 170,639.91

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Solution

The fourth proportional to 313,879.32, 433,158.39 and 170,639.91 is: 235,485.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    313,879.32 : 433,158.39 = 170,639.91 : x
  2. Step 2: Convert to fraction form
    313,879.32/433,158.39 = 170,639.91/x
  3. Step 3: Cross multiply
    313,879.32x = 433,158.39 × 170,639.91
  4. Step 4: Simplify right side
    313,879.32x = 73,914,108,685.34
  5. Step 5: Solve for x
    x = 73,914,108,685.34/313,879.32
  6. Step 6: Final answer
    x = 235,485.76

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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.