Home / 281,111.40-387,917.22-153,761.64

Finding the Fourth Proportional to 281,111.40, 387,917.22 and 153,761.64

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Solution

The fourth proportional to 281,111.40, 387,917.22 and 153,761.64 is: 212,182.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,111.40 : 387,917.22 = 153,761.64 : x
  2. Step 2: Convert to fraction form
    281,111.40/387,917.22 = 153,761.64/x
  3. Step 3: Cross multiply
    281,111.40x = 387,917.22 × 153,761.64
  4. Step 4: Simplify right side
    281,111.40x = 59,646,787,931.44
  5. Step 5: Solve for x
    x = 59,646,787,931.44/281,111.40
  6. Step 6: Final answer
    x = 212,182.03

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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.