Home / 389,446.05-537,436.29-215,016.59

Finding the Fourth Proportional to 389,446.05, 537,436.29 and 215,016.59

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Solution

The fourth proportional to 389,446.05, 537,436.29 and 215,016.59 is: 296,723.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,446.05 : 537,436.29 = 215,016.59 : x
  2. Step 2: Convert to fraction form
    389,446.05/537,436.29 = 215,016.59/x
  3. Step 3: Cross multiply
    389,446.05x = 537,436.29 × 215,016.59
  4. Step 4: Simplify right side
    389,446.05x = 115,557,714,924.56
  5. Step 5: Solve for x
    x = 115,557,714,924.56/389,446.05
  6. Step 6: Final answer
    x = 296,723.30

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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.