Home / 389,549.70-537,579.10-219,799.62

Finding the Fourth Proportional to 389,549.70, 537,579.10 and 219,799.62

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Solution

The fourth proportional to 389,549.70, 537,579.10 and 219,799.62 is: 303,323.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,549.70 : 537,579.10 = 219,799.62 : x
  2. Step 2: Convert to fraction form
    389,549.70/537,579.10 = 219,799.62/x
  3. Step 3: Cross multiply
    389,549.70x = 537,579.10 × 219,799.62
  4. Step 4: Simplify right side
    389,549.70x = 118,159,679,212.05
  5. Step 5: Solve for x
    x = 118,159,679,212.05/389,549.70
  6. Step 6: Final answer
    x = 303,323.76

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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.