Home / 209,406.12-288,980.22-113,912.58

Finding the Fourth Proportional to 209,406.12, 288,980.22 and 113,912.58

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Solution

The fourth proportional to 209,406.12, 288,980.22 and 113,912.58 is: 157,199.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,406.12 : 288,980.22 = 113,912.58 : x
  2. Step 2: Convert to fraction form
    209,406.12/288,980.22 = 113,912.58/x
  3. Step 3: Cross multiply
    209,406.12x = 288,980.22 × 113,912.58
  4. Step 4: Simplify right side
    209,406.12x = 32,918,482,429.17
  5. Step 5: Solve for x
    x = 32,918,482,429.17/209,406.12
  6. Step 6: Final answer
    x = 157,199.24

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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.