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Finding the Fourth Proportional to 201,646.80, 278,276.13 and 109,768.73

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Solution

The fourth proportional to 201,646.80, 278,276.13 and 109,768.73 is: 151,482.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,646.80 : 278,276.13 = 109,768.73 : x
  2. Step 2: Convert to fraction form
    201,646.80/278,276.13 = 109,768.73/x
  3. Step 3: Cross multiply
    201,646.80x = 278,276.13 × 109,768.73
  4. Step 4: Simplify right side
    201,646.80x = 30,546,017,379.41
  5. Step 5: Solve for x
    x = 30,546,017,379.41/201,646.80
  6. Step 6: Final answer
    x = 151,482.78

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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.