Home / 281,144.14-387,988.60-153,819.72

Finding the Fourth Proportional to 281,144.14, 387,988.60 and 153,819.72

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Solution

The fourth proportional to 281,144.14, 387,988.60 and 153,819.72 is: 212,276.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,144.14 : 387,988.60 = 153,819.72 : x
  2. Step 2: Convert to fraction form
    281,144.14/387,988.60 = 153,819.72/x
  3. Step 3: Cross multiply
    281,144.14x = 387,988.60 × 153,819.72
  4. Step 4: Simplify right side
    281,144.14x = 59,680,297,815.19
  5. Step 5: Solve for x
    x = 59,680,297,815.19/281,144.14
  6. Step 6: Final answer
    x = 212,276.51

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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.