Home / 389,446.23-537,436.55-215,016.77

Finding the Fourth Proportional to 389,446.23, 537,436.55 and 215,016.77

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Solution

The fourth proportional to 389,446.23, 537,436.55 and 215,016.77 is: 296,723.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,446.23 : 537,436.55 = 215,016.77 : x
  2. Step 2: Convert to fraction form
    389,446.23/537,436.55 = 215,016.77/x
  3. Step 3: Cross multiply
    389,446.23x = 537,436.55 × 215,016.77
  4. Step 4: Simplify right side
    389,446.23x = 115,557,871,329.45
  5. Step 5: Solve for x
    x = 115,557,871,329.45/389,446.23
  6. Step 6: Final answer
    x = 296,723.56

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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.