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Finding the Fourth Proportional to 257,662.88, 355,578.44 and 155,674.16

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Solution

The fourth proportional to 257,662.88, 355,578.44 and 155,674.16 is: 214,832.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,662.88 : 355,578.44 = 155,674.16 : x
  2. Step 2: Convert to fraction form
    257,662.88/355,578.44 = 155,674.16/x
  3. Step 3: Cross multiply
    257,662.88x = 355,578.44 × 155,674.16
  4. Step 4: Simplify right side
    257,662.88x = 55,354,374,961.11
  5. Step 5: Solve for x
    x = 55,354,374,961.11/257,662.88
  6. Step 6: Final answer
    x = 214,832.56

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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.