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Finding the Fourth Proportional to 236,410.65, 326,246.24 and 128,980.76

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Solution

The fourth proportional to 236,410.65, 326,246.24 and 128,980.76 is: 177,993.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    236,410.65 : 326,246.24 = 128,980.76 : x
  2. Step 2: Convert to fraction form
    236,410.65/326,246.24 = 128,980.76/x
  3. Step 3: Cross multiply
    236,410.65x = 326,246.24 × 128,980.76
  4. Step 4: Simplify right side
    236,410.65x = 42,079,485,706.21
  5. Step 5: Solve for x
    x = 42,079,485,706.21/236,410.65
  6. Step 6: Final answer
    x = 177,993.19

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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.