Home / 377,849.68-521,430-208,082.56

Finding the Fourth Proportional to 377,849.68, 521,430 and 208,082.56

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Solution

The fourth proportional to 377,849.68, 521,430 and 208,082.56 is: 287,152.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    377,849.68 : 521,430 = 208,082.56 : x
  2. Step 2: Convert to fraction form
    377,849.68/521,430 = 208,082.56/x
  3. Step 3: Cross multiply
    377,849.68x = 521,430 × 208,082.56
  4. Step 4: Simplify right side
    377,849.68x = 108,500,489,260.80
  5. Step 5: Solve for x
    x = 108,500,489,260.80/377,849.68
  6. Step 6: Final answer
    x = 287,152.52

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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.