Home / 209,421.36-289,001.88-113,928.48

Finding the Fourth Proportional to 209,421.36, 289,001.88 and 113,928.48

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Solution

The fourth proportional to 209,421.36, 289,001.88 and 113,928.48 is: 157,221.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,421.36 : 289,001.88 = 113,928.48 : x
  2. Step 2: Convert to fraction form
    209,421.36/289,001.88 = 113,928.48/x
  3. Step 3: Cross multiply
    209,421.36x = 289,001.88 × 113,928.48
  4. Step 4: Simplify right side
    209,421.36x = 32,925,544,905.54
  5. Step 5: Solve for x
    x = 32,925,544,905.54/209,421.36
  6. Step 6: Final answer
    x = 157,221.52

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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.