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Finding the Fourth Proportional to 445,917.56, 668,875.96 and 256,256.96

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Solution

The fourth proportional to 445,917.56, 668,875.96 and 256,256.96 is: 384,385.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,917.56 : 668,875.96 = 256,256.96 : x
  2. Step 2: Convert to fraction form
    445,917.56/668,875.96 = 256,256.96/x
  3. Step 3: Cross multiply
    445,917.56x = 668,875.96 × 256,256.96
  4. Step 4: Simplify right side
    445,917.56x = 171,404,120,126.68
  5. Step 5: Solve for x
    x = 171,404,120,126.68/445,917.56
  6. Step 6: Final answer
    x = 384,385.22

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.