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Finding the Fourth Proportional to 222,857.76, 307,565.80 and 127,378.16

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Solution

The fourth proportional to 222,857.76, 307,565.80 and 127,378.16 is: 175,794.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    222,857.76 : 307,565.80 = 127,378.16 : x
  2. Step 2: Convert to fraction form
    222,857.76/307,565.80 = 127,378.16/x
  3. Step 3: Cross multiply
    222,857.76x = 307,565.80 × 127,378.16
  4. Step 4: Simplify right side
    222,857.76x = 39,177,165,682.93
  5. Step 5: Solve for x
    x = 39,177,165,682.93/222,857.76
  6. Step 6: Final answer
    x = 175,794.49

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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.