Home / 289,409.09-434,261.67-137,777.50

Finding the Fourth Proportional to 289,409.09, 434,261.67 and 137,777.50

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Solution

The fourth proportional to 289,409.09, 434,261.67 and 137,777.50 is: 206,736.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,409.09 : 434,261.67 = 137,777.50 : x
  2. Step 2: Convert to fraction form
    289,409.09/434,261.67 = 137,777.50/x
  3. Step 3: Cross multiply
    289,409.09x = 434,261.67 × 137,777.50
  4. Step 4: Simplify right side
    289,409.09x = 59,831,485,067.12
  5. Step 5: Solve for x
    x = 59,831,485,067.12/289,409.09
  6. Step 6: Final answer
    x = 206,736.72

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.