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Finding the Fourth Proportional to 312,520.60, 431,247.54 and 174,673.72

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Solution

The fourth proportional to 312,520.60, 431,247.54 and 174,673.72 is: 241,032.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,520.60 : 431,247.54 = 174,673.72 : x
  2. Step 2: Convert to fraction form
    312,520.60/431,247.54 = 174,673.72/x
  3. Step 3: Cross multiply
    312,520.60x = 431,247.54 × 174,673.72
  4. Step 4: Simplify right side
    312,520.60x = 75,327,612,052.65
  5. Step 5: Solve for x
    x = 75,327,612,052.65/312,520.60
  6. Step 6: Final answer
    x = 241,032.47

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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.