Home / 236,820.26-326,808.09-129,387.98

Finding the Fourth Proportional to 236,820.26, 326,808.09 and 129,387.98

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Solution

The fourth proportional to 236,820.26, 326,808.09 and 129,387.98 is: 178,553.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    236,820.26 : 326,808.09 = 129,387.98 : x
  2. Step 2: Convert to fraction form
    236,820.26/326,808.09 = 129,387.98/x
  3. Step 3: Cross multiply
    236,820.26x = 326,808.09 × 129,387.98
  4. Step 4: Simplify right side
    236,820.26x = 42,285,036,978.72
  5. Step 5: Solve for x
    x = 42,285,036,978.72/236,820.26
  6. Step 6: Final answer
    x = 178,553.30

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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.