Home / 281,752.16-388,815.66-154,427.45

Finding the Fourth Proportional to 281,752.16, 388,815.66 and 154,427.45

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Solution

The fourth proportional to 281,752.16, 388,815.66 and 154,427.45 is: 213,108.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,752.16 : 388,815.66 = 154,427.45 : x
  2. Step 2: Convert to fraction form
    281,752.16/388,815.66 = 154,427.45/x
  3. Step 3: Cross multiply
    281,752.16x = 388,815.66 × 154,427.45
  4. Step 4: Simplify right side
    281,752.16x = 60,043,808,949.79
  5. Step 5: Solve for x
    x = 60,043,808,949.79/281,752.16
  6. Step 6: Final answer
    x = 213,108.61

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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.