Home / 389,290.20-537,318.33-219,622.74

Finding the Fourth Proportional to 389,290.20, 537,318.33 and 219,622.74

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Solution

The fourth proportional to 389,290.20, 537,318.33 and 219,622.74 is: 303,134.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,290.20 : 537,318.33 = 219,622.74 : x
  2. Step 2: Convert to fraction form
    389,290.20/537,318.33 = 219,622.74/x
  3. Step 3: Cross multiply
    389,290.20x = 537,318.33 × 219,622.74
  4. Step 4: Simplify right side
    389,290.20x = 118,007,323,886.82
  5. Step 5: Solve for x
    x = 118,007,323,886.82/389,290.20
  6. Step 6: Final answer
    x = 303,134.59

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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.