Home / 281,145.28-387,977.04-153,819.04

Finding the Fourth Proportional to 281,145.28, 387,977.04 and 153,819.04

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Solution

The fourth proportional to 281,145.28, 387,977.04 and 153,819.04 is: 212,268.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,145.28 : 387,977.04 = 153,819.04 : x
  2. Step 2: Convert to fraction form
    281,145.28/387,977.04 = 153,819.04/x
  3. Step 3: Cross multiply
    281,145.28x = 387,977.04 × 153,819.04
  4. Step 4: Simplify right side
    281,145.28x = 59,678,255,834.84
  5. Step 5: Solve for x
    x = 59,678,255,834.84/281,145.28
  6. Step 6: Final answer
    x = 212,268.39

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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.