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Finding the Fourth Proportional to 295,874.40, 443,811.60 and 280,711.20

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Solution

The fourth proportional to 295,874.40, 443,811.60 and 280,711.20 is: 421,066.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    295,874.40 : 443,811.60 = 280,711.20 : x
  2. Step 2: Convert to fraction form
    295,874.40/443,811.60 = 280,711.20/x
  3. Step 3: Cross multiply
    295,874.40x = 443,811.60 × 280,711.20
  4. Step 4: Simplify right side
    295,874.40x = 124,582,886,809.92
  5. Step 5: Solve for x
    x = 124,582,886,809.92/295,874.40
  6. Step 6: Final answer
    x = 421,066.80

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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.