Home / 389,221.68-537,126-219,455.84

Finding the Fourth Proportional to 389,221.68, 537,126 and 219,455.84

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Solution

The fourth proportional to 389,221.68, 537,126 and 219,455.84 is: 302,849.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,221.68 : 537,126 = 219,455.84 : x
  2. Step 2: Convert to fraction form
    389,221.68/537,126 = 219,455.84/x
  3. Step 3: Cross multiply
    389,221.68x = 537,126 × 219,455.84
  4. Step 4: Simplify right side
    389,221.68x = 117,875,437,515.84
  5. Step 5: Solve for x
    x = 117,875,437,515.84/389,221.68
  6. Step 6: Final answer
    x = 302,849.11

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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.