Home / 209,215.98-288,716.40-113,720.22

Finding the Fourth Proportional to 209,215.98, 288,716.40 and 113,720.22

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Solution

The fourth proportional to 209,215.98, 288,716.40 and 113,720.22 is: 156,933.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,215.98 : 288,716.40 = 113,720.22 : x
  2. Step 2: Convert to fraction form
    209,215.98/288,716.40 = 113,720.22/x
  3. Step 3: Cross multiply
    209,215.98x = 288,716.40 × 113,720.22
  4. Step 4: Simplify right side
    209,215.98x = 32,832,892,525.61
  5. Step 5: Solve for x
    x = 32,832,892,525.61/209,215.98
  6. Step 6: Final answer
    x = 156,933.01

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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.