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Finding the Fourth Proportional to 223,571.52, 308,514.96 and 128,056.32

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Solution

The fourth proportional to 223,571.52, 308,514.96 and 128,056.32 is: 176,709.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,571.52 : 308,514.96 = 128,056.32 : x
  2. Step 2: Convert to fraction form
    223,571.52/308,514.96 = 128,056.32/x
  3. Step 3: Cross multiply
    223,571.52x = 308,514.96 × 128,056.32
  4. Step 4: Simplify right side
    223,571.52x = 39,507,290,442.55
  5. Step 5: Solve for x
    x = 39,507,290,442.55/223,571.52
  6. Step 6: Final answer
    x = 176,709.85

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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.