Home / 309,470.20-464,155.47-84,778.09

Finding the Fourth Proportional to 309,470.20, 464,155.47 and 84,778.09

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Solution

The fourth proportional to 309,470.20, 464,155.47 and 84,778.09 is: 127,153.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,470.20 : 464,155.47 = 84,778.09 : x
  2. Step 2: Convert to fraction form
    309,470.20/464,155.47 = 84,778.09/x
  3. Step 3: Cross multiply
    309,470.20x = 464,155.47 × 84,778.09
  4. Step 4: Simplify right side
    309,470.20x = 39,350,214,209.65
  5. Step 5: Solve for x
    x = 39,350,214,209.65/309,470.20
  6. Step 6: Final answer
    x = 127,153.48

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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.