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Finding the Fourth Proportional to 201,878.30, 302,817.45 and 127,228.70

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Solution

The fourth proportional to 201,878.30, 302,817.45 and 127,228.70 is: 190,843.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,878.30 : 302,817.45 = 127,228.70 : x
  2. Step 2: Convert to fraction form
    201,878.30/302,817.45 = 127,228.70/x
  3. Step 3: Cross multiply
    201,878.30x = 302,817.45 × 127,228.70
  4. Step 4: Simplify right side
    201,878.30x = 38,527,070,500.82
  5. Step 5: Solve for x
    x = 38,527,070,500.82/201,878.30
  6. Step 6: Final answer
    x = 190,843.05

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.