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Finding the Fourth Proportional to 274,897.02, 412,410.09 and 85,347.60

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Solution

The fourth proportional to 274,897.02, 412,410.09 and 85,347.60 is: 128,041.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    274,897.02 : 412,410.09 = 85,347.60 : x
  2. Step 2: Convert to fraction form
    274,897.02/412,410.09 = 85,347.60/x
  3. Step 3: Cross multiply
    274,897.02x = 412,410.09 × 85,347.60
  4. Step 4: Simplify right side
    274,897.02x = 35,198,211,397.28
  5. Step 5: Solve for x
    x = 35,198,211,397.28/274,897.02
  6. Step 6: Final answer
    x = 128,041.44

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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.