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Finding the Fourth Proportional to 203,220.20, 304,830.30 and 84,890.60

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Solution

The fourth proportional to 203,220.20, 304,830.30 and 84,890.60 is: 127,335.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,220.20 : 304,830.30 = 84,890.60 : x
  2. Step 2: Convert to fraction form
    203,220.20/304,830.30 = 84,890.60/x
  3. Step 3: Cross multiply
    203,220.20x = 304,830.30 × 84,890.60
  4. Step 4: Simplify right side
    203,220.20x = 25,877,227,065.18
  5. Step 5: Solve for x
    x = 25,877,227,065.18/203,220.20
  6. Step 6: Final answer
    x = 127,335.90

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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.