Home / 389,147.64-537,016.44-219,381.84

Finding the Fourth Proportional to 389,147.64, 537,016.44 and 219,381.84

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Solution

The fourth proportional to 389,147.64, 537,016.44 and 219,381.84 is: 302,742.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,147.64 : 537,016.44 = 219,381.84 : x
  2. Step 2: Convert to fraction form
    389,147.64/537,016.44 = 219,381.84/x
  3. Step 3: Cross multiply
    389,147.64x = 537,016.44 × 219,381.84
  4. Step 4: Simplify right side
    389,147.64x = 117,811,654,717.45
  5. Step 5: Solve for x
    x = 117,811,654,717.45/389,147.64
  6. Step 6: Final answer
    x = 302,742.82

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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.