Home / 209,353.82-288,815.01-139,518.81

Finding the Fourth Proportional to 209,353.82, 288,815.01 and 139,518.81

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Solution

The fourth proportional to 209,353.82, 288,815.01 and 139,518.81 is: 192,473.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,353.82 : 288,815.01 = 139,518.81 : x
  2. Step 2: Convert to fraction form
    209,353.82/288,815.01 = 139,518.81/x
  3. Step 3: Cross multiply
    209,353.82x = 288,815.01 × 139,518.81
  4. Step 4: Simplify right side
    209,353.82x = 40,295,126,505.34
  5. Step 5: Solve for x
    x = 40,295,126,505.34/209,353.82
  6. Step 6: Final answer
    x = 192,473.81

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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.