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Finding the Fourth Proportional to 286,861.44, 395,871.12 and 159,534.30

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Solution

The fourth proportional to 286,861.44, 395,871.12 and 159,534.30 is: 220,158.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,861.44 : 395,871.12 = 159,534.30 : x
  2. Step 2: Convert to fraction form
    286,861.44/395,871.12 = 159,534.30/x
  3. Step 3: Cross multiply
    286,861.44x = 395,871.12 × 159,534.30
  4. Step 4: Simplify right side
    286,861.44x = 63,155,022,019.42
  5. Step 5: Solve for x
    x = 63,155,022,019.42/286,861.44
  6. Step 6: Final answer
    x = 220,158.63

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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.