Home / 312,942.08-431,883.90-176,978.72

Finding the Fourth Proportional to 312,942.08, 431,883.90 and 176,978.72

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Solution

The fourth proportional to 312,942.08, 431,883.90 and 176,978.72 is: 244,244.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,942.08 : 431,883.90 = 176,978.72 : x
  2. Step 2: Convert to fraction form
    312,942.08/431,883.90 = 176,978.72/x
  3. Step 3: Cross multiply
    312,942.08x = 431,883.90 × 176,978.72
  4. Step 4: Simplify right side
    312,942.08x = 76,434,260,890.32
  5. Step 5: Solve for x
    x = 76,434,260,890.32/312,942.08
  6. Step 6: Final answer
    x = 244,244.11

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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.