Home / 312,919.36-469,418.40-153,000.64

Finding the Fourth Proportional to 312,919.36, 469,418.40 and 153,000.64

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Solution

The fourth proportional to 312,919.36, 469,418.40 and 153,000.64 is: 229,520.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,919.36 : 469,418.40 = 153,000.64 : x
  2. Step 2: Convert to fraction form
    312,919.36/469,418.40 = 153,000.64/x
  3. Step 3: Cross multiply
    312,919.36x = 469,418.40 × 153,000.64
  4. Step 4: Simplify right side
    312,919.36x = 71,821,315,627.78
  5. Step 5: Solve for x
    x = 71,821,315,627.78/312,919.36
  6. Step 6: Final answer
    x = 229,520.20

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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.