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Finding the Fourth Proportional to 427,671.90, 590,128.84 and 255,553.48

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Solution

The fourth proportional to 427,671.90, 590,128.84 and 255,553.48 is: 352,628.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    427,671.90 : 590,128.84 = 255,553.48 : x
  2. Step 2: Convert to fraction form
    427,671.90/590,128.84 = 255,553.48/x
  3. Step 3: Cross multiply
    427,671.90x = 590,128.84 × 255,553.48
  4. Step 4: Simplify right side
    427,671.90x = 150,809,479,767.47
  5. Step 5: Solve for x
    x = 150,809,479,767.47/427,671.90
  6. Step 6: Final answer
    x = 352,628.92

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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.