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Finding the Fourth Proportional to 312,895.44, 431,795.72 and 169,655.44

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Solution

The fourth proportional to 312,895.44, 431,795.72 and 169,655.44 is: 234,124.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,895.44 : 431,795.72 = 169,655.44 : x
  2. Step 2: Convert to fraction form
    312,895.44/431,795.72 = 169,655.44/x
  3. Step 3: Cross multiply
    312,895.44x = 431,795.72 × 169,655.44
  4. Step 4: Simplify right side
    312,895.44x = 73,256,492,866.72
  5. Step 5: Solve for x
    x = 73,256,492,866.72/312,895.44
  6. Step 6: Final answer
    x = 234,124.51

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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.