Home / 281,015.40-387,806.94-153,699.18

Finding the Fourth Proportional to 281,015.40, 387,806.94 and 153,699.18

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Solution

The fourth proportional to 281,015.40, 387,806.94 and 153,699.18 is: 212,107.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,015.40 : 387,806.94 = 153,699.18 : x
  2. Step 2: Convert to fraction form
    281,015.40/387,806.94 = 153,699.18/x
  3. Step 3: Cross multiply
    281,015.40x = 387,806.94 × 153,699.18
  4. Step 4: Simplify right side
    281,015.40x = 59,605,608,676.31
  5. Step 5: Solve for x
    x = 59,605,608,676.31/281,015.40
  6. Step 6: Final answer
    x = 212,107.98

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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.