Home / 389,929.93-538,084.04-217,813.73

Finding the Fourth Proportional to 389,929.93, 538,084.04 and 217,813.73

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Solution

The fourth proportional to 389,929.93, 538,084.04 and 217,813.73 is: 300,572.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,929.93 : 538,084.04 = 217,813.73 : x
  2. Step 2: Convert to fraction form
    389,929.93/538,084.04 = 217,813.73/x
  3. Step 3: Cross multiply
    389,929.93x = 538,084.04 × 217,813.73
  4. Step 4: Simplify right side
    389,929.93x = 117,202,091,805.87
  5. Step 5: Solve for x
    x = 117,202,091,805.87/389,929.93
  6. Step 6: Final answer
    x = 300,572.19

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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.