Home / 378,039.15-521,343.58-275,902.83

Finding the Fourth Proportional to 378,039.15, 521,343.58 and 275,902.83

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Solution

The fourth proportional to 378,039.15, 521,343.58 and 275,902.83 is: 380,490.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,039.15 : 521,343.58 = 275,902.83 : x
  2. Step 2: Convert to fraction form
    378,039.15/521,343.58 = 275,902.83/x
  3. Step 3: Cross multiply
    378,039.15x = 521,343.58 × 275,902.83
  4. Step 4: Simplify right side
    378,039.15x = 143,840,169,124.33
  5. Step 5: Solve for x
    x = 143,840,169,124.33/378,039.15
  6. Step 6: Final answer
    x = 380,490.14

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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.