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Finding the Fourth Proportional to 389,549.45, 537,578.76 and 219,799.37

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Solution

The fourth proportional to 389,549.45, 537,578.76 and 219,799.37 is: 303,323.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,549.45 : 537,578.76 = 219,799.37 : x
  2. Step 2: Convert to fraction form
    389,549.45/537,578.76 = 219,799.37/x
  3. Step 3: Cross multiply
    389,549.45x = 537,578.76 × 219,799.37
  4. Step 4: Simplify right side
    389,549.45x = 118,159,472,773.38
  5. Step 5: Solve for x
    x = 118,159,472,773.38/389,549.45
  6. Step 6: Final answer
    x = 303,323.42

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1.5x scale

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.