Home / 378,038.15-521,342.21-275,901.83

Finding the Fourth Proportional to 378,038.15, 521,342.21 and 275,901.83

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Solution

The fourth proportional to 378,038.15, 521,342.21 and 275,901.83 is: 380,488.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,038.15 : 521,342.21 = 275,901.83 : x
  2. Step 2: Convert to fraction form
    378,038.15/521,342.21 = 275,901.83/x
  3. Step 3: Cross multiply
    378,038.15x = 521,342.21 × 275,901.83
  4. Step 4: Simplify right side
    378,038.15x = 143,839,265,809.02
  5. Step 5: Solve for x
    x = 143,839,265,809.02/378,038.15
  6. Step 6: Final answer
    x = 380,488.76

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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.