Home / 209,886.40-289,649.55-114,399.28

Finding the Fourth Proportional to 209,886.40, 289,649.55 and 114,399.28

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Solution

The fourth proportional to 209,886.40, 289,649.55 and 114,399.28 is: 157,874.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,886.40 : 289,649.55 = 114,399.28 : x
  2. Step 2: Convert to fraction form
    209,886.40/289,649.55 = 114,399.28/x
  3. Step 3: Cross multiply
    209,886.40x = 289,649.55 × 114,399.28
  4. Step 4: Simplify right side
    209,886.40x = 33,135,699,972.32
  5. Step 5: Solve for x
    x = 33,135,699,972.32/209,886.40
  6. Step 6: Final answer
    x = 157,874.45

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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.