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Finding the Fourth Proportional to 223,690.44, 308,705.58 and 128,213.04

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Solution

The fourth proportional to 223,690.44, 308,705.58 and 128,213.04 is: 176,941.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,690.44 : 308,705.58 = 128,213.04 : x
  2. Step 2: Convert to fraction form
    223,690.44/308,705.58 = 128,213.04/x
  3. Step 3: Cross multiply
    223,690.44x = 308,705.58 × 128,213.04
  4. Step 4: Simplify right side
    223,690.44x = 39,580,080,876.76
  5. Step 5: Solve for x
    x = 39,580,080,876.76/223,690.44
  6. Step 6: Final answer
    x = 176,941.32

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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.