Home / 281,107.75-387,937.86-153,783.35

Finding the Fourth Proportional to 281,107.75, 387,937.86 and 153,783.35

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Solution

The fourth proportional to 281,107.75, 387,937.86 and 153,783.35 is: 212,226.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,107.75 : 387,937.86 = 153,783.35 : x
  2. Step 2: Convert to fraction form
    281,107.75/387,937.86 = 153,783.35/x
  3. Step 3: Cross multiply
    281,107.75x = 387,937.86 × 153,783.35
  4. Step 4: Simplify right side
    281,107.75x = 59,658,382,051.29
  5. Step 5: Solve for x
    x = 59,658,382,051.29/281,107.75
  6. Step 6: Final answer
    x = 212,226.03

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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.