Home / 389,586.94-537,638.37-215,156.61

Finding the Fourth Proportional to 389,586.94, 537,638.37 and 215,156.61

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Solution

The fourth proportional to 389,586.94, 537,638.37 and 215,156.61 is: 296,920.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,586.94 : 537,638.37 = 215,156.61 : x
  2. Step 2: Convert to fraction form
    389,586.94/537,638.37 = 215,156.61/x
  3. Step 3: Cross multiply
    389,586.94x = 537,638.37 × 215,156.61
  4. Step 4: Simplify right side
    389,586.94x = 115,676,449,095.13
  5. Step 5: Solve for x
    x = 115,676,449,095.13/389,586.94
  6. Step 6: Final answer
    x = 296,920.76

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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.