Home / 389,619.70-584,429.55-223,270.90

Finding the Fourth Proportional to 389,619.70, 584,429.55 and 223,270.90

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Solution

The fourth proportional to 389,619.70, 584,429.55 and 223,270.90 is: 334,906.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,619.70 : 584,429.55 = 223,270.90 : x
  2. Step 2: Convert to fraction form
    389,619.70/584,429.55 = 223,270.90/x
  3. Step 3: Cross multiply
    389,619.70x = 584,429.55 × 223,270.90
  4. Step 4: Simplify right side
    389,619.70x = 130,486,111,615.10
  5. Step 5: Solve for x
    x = 130,486,111,615.10/389,619.70
  6. Step 6: Final answer
    x = 334,906.35

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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.