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Finding the Fourth Proportional to 205,010.60, 307,515.90 and 197,137.40

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Solution

The fourth proportional to 205,010.60, 307,515.90 and 197,137.40 is: 295,706.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,010.60 : 307,515.90 = 197,137.40 : x
  2. Step 2: Convert to fraction form
    205,010.60/307,515.90 = 197,137.40/x
  3. Step 3: Cross multiply
    205,010.60x = 307,515.90 × 197,137.40
  4. Step 4: Simplify right side
    205,010.60x = 60,622,884,984.66
  5. Step 5: Solve for x
    x = 60,622,884,984.66/205,010.60
  6. Step 6: Final answer
    x = 295,706.10

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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.