Home / 236,826.78-326,811.24-129,400.50

Finding the Fourth Proportional to 236,826.78, 326,811.24 and 129,400.50

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Solution

The fourth proportional to 236,826.78, 326,811.24 and 129,400.50 is: 178,567.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    236,826.78 : 326,811.24 = 129,400.50 : x
  2. Step 2: Convert to fraction form
    236,826.78/326,811.24 = 129,400.50/x
  3. Step 3: Cross multiply
    236,826.78x = 326,811.24 × 129,400.50
  4. Step 4: Simplify right side
    236,826.78x = 42,289,537,861.62
  5. Step 5: Solve for x
    x = 42,289,537,861.62/236,826.78
  6. Step 6: Final answer
    x = 178,567.38

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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.