Home / 389,640.30-584,314.65-136,823.10

Finding the Fourth Proportional to 389,640.30, 584,314.65 and 136,823.10

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Solution

The fourth proportional to 389,640.30, 584,314.65 and 136,823.10 is: 205,183.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,640.30 : 584,314.65 = 136,823.10 : x
  2. Step 2: Convert to fraction form
    389,640.30/584,314.65 = 136,823.10/x
  3. Step 3: Cross multiply
    389,640.30x = 584,314.65 × 136,823.10
  4. Step 4: Simplify right side
    389,640.30x = 79,947,741,788.42
  5. Step 5: Solve for x
    x = 79,947,741,788.42/389,640.30
  6. Step 6: Final answer
    x = 205,183.45

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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.