Home / 389,856.76-537,972.30-220,107.64

Finding the Fourth Proportional to 389,856.76, 537,972.30 and 220,107.64

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Solution

The fourth proportional to 389,856.76, 537,972.30 and 220,107.64 is: 303,731.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,856.76 : 537,972.30 = 220,107.64 : x
  2. Step 2: Convert to fraction form
    389,856.76/537,972.30 = 220,107.64/x
  3. Step 3: Cross multiply
    389,856.76x = 537,972.30 × 220,107.64
  4. Step 4: Simplify right side
    389,856.76x = 118,411,813,338.37
  5. Step 5: Solve for x
    x = 118,411,813,338.37/389,856.76
  6. Step 6: Final answer
    x = 303,731.59

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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.