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Finding the Fourth Proportional to 486,009.36, 670,693.32 and 271,149.46

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Solution

The fourth proportional to 486,009.36, 670,693.32 and 271,149.46 is: 374,186.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,009.36 : 670,693.32 = 271,149.46 : x
  2. Step 2: Convert to fraction form
    486,009.36/670,693.32 = 271,149.46/x
  3. Step 3: Cross multiply
    486,009.36x = 670,693.32 × 271,149.46
  4. Step 4: Simplify right side
    486,009.36x = 181,858,131,543.61
  5. Step 5: Solve for x
    x = 181,858,131,543.61/486,009.36
  6. Step 6: Final answer
    x = 374,186.48

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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.