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Finding the Fourth Proportional to 296,870.20, 445,305.30 and 274,060.60

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Solution

The fourth proportional to 296,870.20, 445,305.30 and 274,060.60 is: 411,090.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    296,870.20 : 445,305.30 = 274,060.60 : x
  2. Step 2: Convert to fraction form
    296,870.20/445,305.30 = 274,060.60/x
  3. Step 3: Cross multiply
    296,870.20x = 445,305.30 × 274,060.60
  4. Step 4: Simplify right side
    296,870.20x = 122,040,637,701.18
  5. Step 5: Solve for x
    x = 122,040,637,701.18/296,870.20
  6. Step 6: Final answer
    x = 411,090.90

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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.