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Finding the Fourth Proportional to 223,728.32, 308,751.28 and 121,754.72

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Solution

The fourth proportional to 223,728.32, 308,751.28 and 121,754.72 is: 168,024.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,728.32 : 308,751.28 = 121,754.72 : x
  2. Step 2: Convert to fraction form
    223,728.32/308,751.28 = 121,754.72/x
  3. Step 3: Cross multiply
    223,728.32x = 308,751.28 × 121,754.72
  4. Step 4: Simplify right side
    223,728.32x = 37,591,925,646.04
  5. Step 5: Solve for x
    x = 37,591,925,646.04/223,728.32
  6. Step 6: Final answer
    x = 168,024.89

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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.