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Finding the Fourth Proportional to 201,877.90, 302,816.85 and 127,228.30

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Solution

The fourth proportional to 201,877.90, 302,816.85 and 127,228.30 is: 190,842.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,877.90 : 302,816.85 = 127,228.30 : x
  2. Step 2: Convert to fraction form
    201,877.90/302,816.85 = 127,228.30/x
  3. Step 3: Cross multiply
    201,877.90x = 302,816.85 × 127,228.30
  4. Step 4: Simplify right side
    201,877.90x = 38,526,873,036.86
  5. Step 5: Solve for x
    x = 38,526,873,036.86/201,877.90
  6. Step 6: Final answer
    x = 190,842.45

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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.