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Finding the Fourth Proportional to 389,487.88, 537,518.12 and 219,660.04

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Solution

The fourth proportional to 389,487.88, 537,518.12 and 219,660.04 is: 303,144.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,487.88 : 537,518.12 = 219,660.04 : x
  2. Step 2: Convert to fraction form
    389,487.88/537,518.12 = 219,660.04/x
  3. Step 3: Cross multiply
    389,487.88x = 537,518.12 × 219,660.04
  4. Step 4: Simplify right side
    389,487.88x = 118,071,251,739.93
  5. Step 5: Solve for x
    x = 118,071,251,739.93/389,487.88
  6. Step 6: Final answer
    x = 303,144.87

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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.