Home / 389,930.38-584,895.58-140,612.38

Finding the Fourth Proportional to 389,930.38, 584,895.58 and 140,612.38

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Solution

The fourth proportional to 389,930.38, 584,895.58 and 140,612.38 is: 210,918.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,930.38 : 584,895.58 = 140,612.38 : x
  2. Step 2: Convert to fraction form
    389,930.38/584,895.58 = 140,612.38/x
  3. Step 3: Cross multiply
    389,930.38x = 584,895.58 × 140,612.38
  4. Step 4: Simplify right side
    389,930.38x = 82,243,559,555.28
  5. Step 5: Solve for x
    x = 82,243,559,555.28/389,930.38
  6. Step 6: Final answer
    x = 210,918.57

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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.