Home / 281,839.47-388,938.38-154,512.33

Finding the Fourth Proportional to 281,839.47, 388,938.38 and 154,512.33

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Solution

The fourth proportional to 281,839.47, 388,938.38 and 154,512.33 is: 213,226.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,839.47 : 388,938.38 = 154,512.33 : x
  2. Step 2: Convert to fraction form
    281,839.47/388,938.38 = 154,512.33/x
  3. Step 3: Cross multiply
    281,839.47x = 388,938.38 × 154,512.33
  4. Step 4: Simplify right side
    281,839.47x = 60,095,774,547.66
  5. Step 5: Solve for x
    x = 60,095,774,547.66/281,839.47
  6. Step 6: Final answer
    x = 213,226.96

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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.