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Finding the Fourth Proportional to 298,040.40, 447,060.60 and 281,710.80

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Solution

The fourth proportional to 298,040.40, 447,060.60 and 281,710.80 is: 422,566.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    298,040.40 : 447,060.60 = 281,710.80 : x
  2. Step 2: Convert to fraction form
    298,040.40/447,060.60 = 281,710.80/x
  3. Step 3: Cross multiply
    298,040.40x = 447,060.60 × 281,710.80
  4. Step 4: Simplify right side
    298,040.40x = 125,941,799,274.48
  5. Step 5: Solve for x
    x = 125,941,799,274.48/298,040.40
  6. Step 6: Final answer
    x = 422,566.20

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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.