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Finding the Fourth Proportional to 286,741.44, 395,713.13 and 157,685.20

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Solution

The fourth proportional to 286,741.44, 395,713.13 and 157,685.20 is: 217,611.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,741.44 : 395,713.13 = 157,685.20 : x
  2. Step 2: Convert to fraction form
    286,741.44/395,713.13 = 157,685.20/x
  3. Step 3: Cross multiply
    286,741.44x = 395,713.13 × 157,685.20
  4. Step 4: Simplify right side
    286,741.44x = 62,398,102,268.97
  5. Step 5: Solve for x
    x = 62,398,102,268.97/286,741.44
  6. Step 6: Final answer
    x = 217,611.04

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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.