Home / 252,393.12-378,507.78-83,868.21

Finding the Fourth Proportional to 252,393.12, 378,507.78 and 83,868.21

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Solution

The fourth proportional to 252,393.12, 378,507.78 and 83,868.21 is: 125,775.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    252,393.12 : 378,507.78 = 83,868.21 : x
  2. Step 2: Convert to fraction form
    252,393.12/378,507.78 = 83,868.21/x
  3. Step 3: Cross multiply
    252,393.12x = 378,507.78 × 83,868.21
  4. Step 4: Simplify right side
    252,393.12x = 31,744,769,979.67
  5. Step 5: Solve for x
    x = 31,744,769,979.67/252,393.12
  6. Step 6: Final answer
    x = 125,775.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.