Home / 209,317.12-288,863.10-113,829.40

Finding the Fourth Proportional to 209,317.12, 288,863.10 and 113,829.40

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Solution

The fourth proportional to 209,317.12, 288,863.10 and 113,829.40 is: 157,087.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,317.12 : 288,863.10 = 113,829.40 : x
  2. Step 2: Convert to fraction form
    209,317.12/288,863.10 = 113,829.40/x
  3. Step 3: Cross multiply
    209,317.12x = 288,863.10 × 113,829.40
  4. Step 4: Simplify right side
    209,317.12x = 32,881,113,355.14
  5. Step 5: Solve for x
    x = 32,881,113,355.14/209,317.12
  6. Step 6: Final answer
    x = 157,087.55

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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.