Home / 209,135.72-288,608.50-113,643.24

Finding the Fourth Proportional to 209,135.72, 288,608.50 and 113,643.24

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Solution

The fourth proportional to 209,135.72, 288,608.50 and 113,643.24 is: 156,828.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,135.72 : 288,608.50 = 113,643.24 : x
  2. Step 2: Convert to fraction form
    209,135.72/288,608.50 = 113,643.24/x
  3. Step 3: Cross multiply
    209,135.72x = 288,608.50 × 113,643.24
  4. Step 4: Simplify right side
    209,135.72x = 32,798,405,031.54
  5. Step 5: Solve for x
    x = 32,798,405,031.54/209,135.72
  6. Step 6: Final answer
    x = 156,828.33

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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.