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Finding the Fourth Proportional to 676,710.40, 1,015,211.40 and 203,443.60

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Solution

The fourth proportional to 676,710.40, 1,015,211.40 and 203,443.60 is: 305,209.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    676,710.40 : 1,015,211.40 = 203,443.60 : x
  2. Step 2: Convert to fraction form
    676,710.40/1,015,211.40 = 203,443.60/x
  3. Step 3: Cross multiply
    676,710.40x = 1,015,211.40 × 203,443.60
  4. Step 4: Simplify right side
    676,710.40x = 206,538,261,977.04
  5. Step 5: Solve for x
    x = 206,538,261,977.04/676,710.40
  6. Step 6: Final answer
    x = 305,209.23

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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.