Home / 209,273.79-288,809.64-113,778.45

Finding the Fourth Proportional to 209,273.79, 288,809.64 and 113,778.45

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Solution

The fourth proportional to 209,273.79, 288,809.64 and 113,778.45 is: 157,020.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,273.79 : 288,809.64 = 113,778.45 : x
  2. Step 2: Convert to fraction form
    209,273.79/288,809.64 = 113,778.45/x
  3. Step 3: Cross multiply
    209,273.79x = 288,809.64 × 113,778.45
  4. Step 4: Simplify right side
    209,273.79x = 32,860,313,184.26
  5. Step 5: Solve for x
    x = 32,860,313,184.26/209,273.79
  6. Step 6: Final answer
    x = 157,020.68

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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.