Home / 389,823.80-584,930.10-221,473.40

Finding the Fourth Proportional to 389,823.80, 584,930.10 and 221,473.40

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Solution

The fourth proportional to 389,823.80, 584,930.10 and 221,473.40 is: 332,320.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,823.80 : 584,930.10 = 221,473.40 : x
  2. Step 2: Convert to fraction form
    389,823.80/584,930.10 = 221,473.40/x
  3. Step 3: Cross multiply
    389,823.80x = 584,930.10 × 221,473.40
  4. Step 4: Simplify right side
    389,823.80x = 129,546,458,009.34
  5. Step 5: Solve for x
    x = 129,546,458,009.34/389,823.80
  6. Step 6: Final answer
    x = 332,320.55

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.