Home / 236,635.11-326,557.71-129,207.78

Finding the Fourth Proportional to 236,635.11, 326,557.71 and 129,207.78

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Solution

The fourth proportional to 236,635.11, 326,557.71 and 129,207.78 is: 178,307.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    236,635.11 : 326,557.71 = 129,207.78 : x
  2. Step 2: Convert to fraction form
    236,635.11/326,557.71 = 129,207.78/x
  3. Step 3: Cross multiply
    236,635.11x = 326,557.71 × 129,207.78
  4. Step 4: Simplify right side
    236,635.11x = 42,193,796,750.98
  5. Step 5: Solve for x
    x = 42,193,796,750.98/236,635.11
  6. Step 6: Final answer
    x = 178,307.42

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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.