Home / 209,975.40-289,683.34-129,262.68

Finding the Fourth Proportional to 209,975.40, 289,683.34 and 129,262.68

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Solution

The fourth proportional to 209,975.40, 289,683.34 and 129,262.68 is: 178,331.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,975.40 : 289,683.34 = 129,262.68 : x
  2. Step 2: Convert to fraction form
    209,975.40/289,683.34 = 129,262.68/x
  3. Step 3: Cross multiply
    209,975.40x = 289,683.34 × 129,262.68
  4. Step 4: Simplify right side
    209,975.40x = 37,445,244,556.59
  5. Step 5: Solve for x
    x = 37,445,244,556.59/209,975.40
  6. Step 6: Final answer
    x = 178,331.58

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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.