Home / 279,407.07-420,977.48-252,786.84

Finding the Fourth Proportional to 279,407.07, 420,977.48 and 252,786.84

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Solution

The fourth proportional to 279,407.07, 420,977.48 and 252,786.84 is: 380,869.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,407.07 : 420,977.48 = 252,786.84 : x
  2. Step 2: Convert to fraction form
    279,407.07/420,977.48 = 252,786.84/x
  3. Step 3: Cross multiply
    279,407.07x = 420,977.48 × 252,786.84
  4. Step 4: Simplify right side
    279,407.07x = 106,417,564,775.48
  5. Step 5: Solve for x
    x = 106,417,564,775.48/279,407.07
  6. Step 6: Final answer
    x = 380,869.26

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.