Home / 391,869.30-540,773.64-219,787.23

Finding the Fourth Proportional to 391,869.30, 540,773.64 and 219,787.23

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Solution

The fourth proportional to 391,869.30, 540,773.64 and 219,787.23 is: 303,303.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,869.30 : 540,773.64 = 219,787.23 : x
  2. Step 2: Convert to fraction form
    391,869.30/540,773.64 = 219,787.23/x
  3. Step 3: Cross multiply
    391,869.30x = 540,773.64 × 219,787.23
  4. Step 4: Simplify right side
    391,869.30x = 118,855,140,392.62
  5. Step 5: Solve for x
    x = 118,855,140,392.62/391,869.30
  6. Step 6: Final answer
    x = 303,303.02

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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.