Home / 236,396.47-326,227.90-128,968.76

Finding the Fourth Proportional to 236,396.47, 326,227.90 and 128,968.76

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Solution

The fourth proportional to 236,396.47, 326,227.90 and 128,968.76 is: 177,977.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    236,396.47 : 326,227.90 = 128,968.76 : x
  2. Step 2: Convert to fraction form
    236,396.47/326,227.90 = 128,968.76/x
  3. Step 3: Cross multiply
    236,396.47x = 326,227.90 × 128,968.76
  4. Step 4: Simplify right side
    236,396.47x = 42,073,207,740.40
  5. Step 5: Solve for x
    x = 42,073,207,740.40/236,396.47
  6. Step 6: Final answer
    x = 177,977.31

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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.