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Finding the Fourth Proportional to 236,409.69, 326,246.48 and 128,982.12

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Solution

The fourth proportional to 236,409.69, 326,246.48 and 128,982.12 is: 177,995.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    236,409.69 : 326,246.48 = 128,982.12 : x
  2. Step 2: Convert to fraction form
    236,409.69/326,246.48 = 128,982.12/x
  3. Step 3: Cross multiply
    236,409.69x = 326,246.48 × 128,982.12
  4. Step 4: Simplify right side
    236,409.69x = 42,079,963,808.95
  5. Step 5: Solve for x
    x = 42,079,963,808.95/236,409.69
  6. Step 6: Final answer
    x = 177,995.94

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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.