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Finding the Fourth Proportional to 209,480.44, 289,080.57 and 113,985.49

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Solution

The fourth proportional to 209,480.44, 289,080.57 and 113,985.49 is: 157,298.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,480.44 : 289,080.57 = 113,985.49 : x
  2. Step 2: Convert to fraction form
    209,480.44/289,080.57 = 113,985.49/x
  3. Step 3: Cross multiply
    209,480.44x = 289,080.57 × 113,985.49
  4. Step 4: Simplify right side
    209,480.44x = 32,950,990,125.67
  5. Step 5: Solve for x
    x = 32,950,990,125.67/209,480.44
  6. Step 6: Final answer
    x = 157,298.65

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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.