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Finding the Fourth Proportional to 345,218.78, 476,392.27 and 192,256.93

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Solution

The fourth proportional to 345,218.78, 476,392.27 and 192,256.93 is: 265,309.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,218.78 : 476,392.27 = 192,256.93 : x
  2. Step 2: Convert to fraction form
    345,218.78/476,392.27 = 192,256.93/x
  3. Step 3: Cross multiply
    345,218.78x = 476,392.27 × 192,256.93
  4. Step 4: Simplify right side
    345,218.78x = 91,589,713,101.55
  5. Step 5: Solve for x
    x = 91,589,713,101.55/345,218.78
  6. Step 6: Final answer
    x = 265,309.19

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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.