Home / 312,129.30-430,738.38-168,889.44

Finding the Fourth Proportional to 312,129.30, 430,738.38 and 168,889.44

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Solution

The fourth proportional to 312,129.30, 430,738.38 and 168,889.44 is: 233,067.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,129.30 : 430,738.38 = 168,889.44 : x
  2. Step 2: Convert to fraction form
    312,129.30/430,738.38 = 168,889.44/x
  3. Step 3: Cross multiply
    312,129.30x = 430,738.38 × 168,889.44
  4. Step 4: Simplify right side
    312,129.30x = 72,747,163,784.71
  5. Step 5: Solve for x
    x = 72,747,163,784.71/312,129.30
  6. Step 6: Final answer
    x = 233,067.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.