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Finding the Fourth Proportional to 312,968.88, 431,885.40 and 185,568.24

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Solution

The fourth proportional to 312,968.88, 431,885.40 and 185,568.24 is: 256,077.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,968.88 : 431,885.40 = 185,568.24 : x
  2. Step 2: Convert to fraction form
    312,968.88/431,885.40 = 185,568.24/x
  3. Step 3: Cross multiply
    312,968.88x = 431,885.40 × 185,568.24
  4. Step 4: Simplify right side
    312,968.88x = 80,144,213,559.70
  5. Step 5: Solve for x
    x = 80,144,213,559.70/312,968.88
  6. Step 6: Final answer
    x = 256,077.26

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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.