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Finding the Fourth Proportional to 298,425.60, 447,638.40 and 295,315.20

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Solution

The fourth proportional to 298,425.60, 447,638.40 and 295,315.20 is: 442,972.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    298,425.60 : 447,638.40 = 295,315.20 : x
  2. Step 2: Convert to fraction form
    298,425.60/447,638.40 = 295,315.20/x
  3. Step 3: Cross multiply
    298,425.60x = 447,638.40 × 295,315.20
  4. Step 4: Simplify right side
    298,425.60x = 132,194,423,623.68
  5. Step 5: Solve for x
    x = 132,194,423,623.68/298,425.60
  6. Step 6: Final answer
    x = 442,972.80

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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.